Compro - Comclub

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ภภภ(Part I) ŕ¸

Computer Programming . http://student.sut.ac.th/comclub

ภภภ!! Computer Programming # $ ! $ % ภ& ' (ภ) * ) * ภ+ ภภ, ภ,) * $ ภ(+ ! . ) ภ( ภ)/0 12* & , ) << ! & ! )ภ+ ภ(,) 2* !&, * ??) $ * ภ* 4 ) ภ/ ( &5 ( * “ &55â€?) * + * ! & 4* ( 6 & * ) ,) , * , ) ... (& ,) ) ) ภ/ ( *!& ! ) ( ( *!& ! ) ) & 4*! & ( *!ภภภ! ภ& & ( *!ภ4* ,) *!& ! & ),) . ! (& ),) ภ) 8 555 ... ภ+ ! ภ, & & ) 1 ... ) & , ( *!& 8 55 ภ& # ! & & ( *!ภ* & ภ( *!ภภ* 1 + 55 ,) + ! , ภ., (... *& , ) , ! ) ! ) . ภ, &ภ+ !. ) ) ) ! 0 ) . ! " # ภ$ ( ! ) ) & &55 & ! , * ... & ) ! * 1. !9 ' &0 :; (ภ! ภ(ภ* :; ) 2. ภ) C (Introduction to C) ( ) &4 < ,) + ภ... ) '=</ + ) 3. !( ( ! ภ(... ,) ! * ภ) 4. ! + ( ภ! 2 (... ภภ) 5. >: ภ0 (,) * ภ+ ) ภ& ) 6. )? !( ( 8 55 + * * ภ4 ภ/0 * ) ) (Array) 7. ! @<+ , 30 ภ+ * 8 55 -_-!!

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Version 1.0.0

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ภภภ(Part I) ŕ¸

Computer Programming

" % & 1 !9 ' &0 ; : (ภ! ภ(ภ* :; )

ภ& ! * ! *!&ภภ! ภ(ภ*, :; $ ภ& ,) , * 2 4 ' (ภ)+ ! * ( ) * ( * &) ภ) ภ4 !9 ภ) :; ( (ภ*, :; $ ŕ¸

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ภภภ(Part I) ŕ¸

Computer Programming

' ภ()" (ภภภ% ()" ) ภ(ภ* :; $ ! ) ) 4 ) <&0 ( 55 ) ) ) <&0 ) ภ(ภ*, :; &2 ภ! ( & (+ B: *!& ... ) ! !) ( ภ(ภ*, :; ภ* * $ ภ(ภ*, :; ( &ภ& ! $ ( ' ) ( ,) $ & , ( ,) ) ภ. * !9 + ภ+ * ! ภภภ& , *!&!9 5 $ 4 ) ( *! ภ& .! , ) / ภ. ภ(ภ* :; ภภ* ! 4* 4 )! ภ* !& , ภ. ! “ภ.& + ภ&!5555 ภâ€? 8 55 ( ภ(ภ* :; @ ภ< & + + ) ! 0 1) &, *& ภ&0 ภ! + *) ! ) ! 0 & ) ' ) ภ55 ) ,) ) 4 , * * & C + *) * ) ! ) + * ' , * ( * ) ภ$ ภ! ภ&ภ! & " ' ภภ% $, ( &ภ! & 6&55 ,) * # & ) 1. * 2. ภ* ! *!& * 3. &ภ* 4. 4* & ,) ภภ+ * ภ, * 3 ภ( ภ! 4* & ... 8 55 ! & 6&55) 5. * !+ * + + ภ6. &! * ! 7. 4* * !& ,) & + *ภ, + * 6 ภ8. ภ* ! 9. 4* * !& ,) ) + *ภ, ) * 1 ภ. , *! !9 ภภ* !( $ ภ! ภ) ( ) ภ! ภภ& * * ( &ภ! ภ& Algorithm ภ& $ ภ! ภ) ( ( ) *!& Algorithm * * & ,) ภภBug ภ, * &5 & * 5 ) (&* ! * !+ ภ, *, 5 & ,) , * * ภ( 8 55 ) ภ! 4* ภภ& & , ( )ภ! ! &! ! ภ! ) , ) 4* & , (& 5...& ,) ) Algorithm * ภ&ภ! ภ/ 5 ภ/0+ * ภ(ภ*, :; , *) ! ) ( & ภ& Algorithm ( ) 2 * ภ+ *( ! ภ! ภ(ภ*, :; &( *!ภ... ,) , *( ? ) ภ& Algorithm ,) : &( ภ) 4(ภ*, :; + ภ/ 5 , * ) ภ* &( , + ) &4 ! ) .!+ ภAlgorithm $ ! )ภ!* ภ/ 5 ภภ/0 ) * ! Algorithm ( ภ+ ; , .ภ8 55 # ) &4 ภ) :; (

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ภภภ(Part I) ŕ¸

Computer Programming Algorithm ภ#")-. /0ภ&ภ! & & Algorithm ภ) ภ! * ) 10 ! ) * ! ) ภ!* 5 Algorithm ภ! ) ภ!* 5& , * Algorithm ภ% 1 1. ! 10 ! 2. & & ! 10 ) ภ3. ( ) ภAlgorithm / 1. ! 2. 3. 4. 5. 6.

* 1 Algorithm ( ภ!* 5 4* & ,) 10 !+ *ภ, * 1 * 1 Algorithm ( ภ!* 5 + * ( ภ$ ) ภ* 2 Algorithm ( ภ!* 5 & & 4 , ภ) ภ: 4* ) ) ภภ! + * $ ) ภ* 2 Algorithm ( ภ!* 5 4* & & & ,) 10 !+ *ภ, * 4 * 2 Algorithm ( ภ!* 5 ( ) ภ* 3 Algorithm ( ภ!* 5

. ! Algorithm ) ภ) ( ภ!* 5 ( ภ!* 5 4* + * ภ. , *' & ' ) # ! ) ) 4 @< ) <&0 ภ!,!* * * ) 2! $ ภ& ( &5 ( ( $ 5 ) ภ! ภ( & ,) * ) & + * & . , * ภAlgorithm ( & Algorithm * * ) ภ(ภ* :; ภ2 ( , *! Algorithm ภ% 1 1. ! ( ! ( & & + * 10 ! 2. ( ) ภAlgorithm / 1. ( + * $ ) ภ2. 4 , 3. & & 4 , ภ) ภ: 4* ) ) ภภ! + * $ ) ภ4. 4* & & & ,) 10 !+ *ภ, * 2-3 + ) 5. ( ) ŕ¸

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ภภภ(Part I) ŕ¸

Computer Programming * ภ! Algorithm ( 2 * &ภ( ( ภ( 4* ) + ( ภ& ' (ภ) & + ! * 4 5,

! ) * * & ภ( , * 1

90 (Output) ) ภ( ( ภ+ * ! ( + ภภ. ) ภภ! ( ) 4 !( ) + *, *+ & ( + * ! ( * &ภ! ( ,) ) 4 !( ! ภภ) ภ) + *, * ,) , *42ภภ. ภ,) + * ) ภ... 4 )... ( *! , ภ! ภ... & ! + ' (ภ)+ * 6 ) ภ&5! Algorithm 2 ภ! ' &0, * ( + * ! ( * &ภ! ( Algorithm 1 ,) + ! ,) ภ! 4* ' &0 ) ) Algorithm 1 ) 4 !( 5, + * , * + / Algorithm 2 * & Algorithm ( *! ) 4 , + *, * 23ภ" 1. & ภ! ภภ*)) ) 2. & ภ! ภ1 !) ( 1 4 N ) N $ ! * ) 3. * ! ) , ( *! & $ Algorithm

" ภ& 4)@ ภ< ) 2 ! * ) + * ภ& ภภภ& ภภ! ) 2 ภภ& ภ2 2 ! ภ& ภ& , *( *! & ! < , &ภ2 ! ' &4 ) ภ& ! ภ& ) < , & ,) 4* + ,) )+ *&* &, ภ) ) ภ& * &( *! + * ภ& D * 35 ( *! * 35-36 ภ& * )ภภ+ * ( BEภ5 4* + ( BEภ,) , * + *ภ, * 35 - 36 + ) 4* , * ( BEภ. ( *! ( BEภ) 2 " 4. & ภ! ภภ(&ภ(& ! ' &ภ! N ) ภ12*+ * 4* N ) 4( , *+ ภ&! + *( ! One-Digit &!ภ4* ภ( ) ภ+ *( $ Two-Digit ,Three-Digit )6 ( *!+ *( ! Over-Three-Digit 5. & ภ! ภภ(&ภ(& ! ' &ภ! N ) ภ12*+ * 4* N $ 2 + *( ! “It is an even numberâ€? 4* $ + * ) 0! “It is an odd numberâ€? ภ((4)) 1. ) 9 ) ภ+ *+ 2 ภ* 4 * + *1 9 ' &,) &ภภภ( ..ŕ¸

! ) )

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ภภภ(Part I) ŕ¸

Computer Programming 2. ! ) )( + ABCDE + *, * )ภ2

3. :; ) ) ' &0 &2 ! ) &; &2 8 &; $ &; ) 1 &;# ) ภภ! &;

!9 + ภ&; )' &ภ*!& 2 ( & 2 ! ! ภ, * 4* & ,) ,) ( + * + ! ภ( 4 * ( *!ภ. . ! ( BEภ( ' &0 $ ภ+ * ) ! ) * 0+ ภ(ภ* :; ภภ! ) ) ) ( ) ภ4 & ภ) & $ & $ ! * + * . 4 ภ!9 ภ(ภ* :; ' &0 *!&ภ& ภ) & $ & ) ( (

)

& ,) . ) ภภ* + ) ภ+ ! * 5, 4* ( BEภภภ) 0& ,) + ) ) 4 ) ) ), *+ !. ,# 0 ) )

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ภภภ(Part I) ŕ¸

Computer Programming

" % & 2 ภ) C (Introduction)

ภ& ! * ภ&!ภ< C ภ@ ภ< ( ! * ! * ภ( ( *!ภ&

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ภภภ(Part I) ŕ¸

Computer Programming " $ ภ!& C

< # $ < ) ! 0 < + < ) ! 0 & < ( & ) < # )ภ42ภ+ * $

< ) * ) + ) $ < ) ภ) 4 2 , * .! ) > : ภ0 . 2 ( ) 4 ภ( + ภ& , * &( (! , ( ภ. ) < # 4 ! $ < + ภ# !) / ภ</ < + 2 ภ* *!&ภ< # $ < ' * (Structured Language) 12* & ) 4( (&ภ' (ภ) $ ! 5 , * ' &( ! $ ภ( ภ) : ) < G ภ# ) ภ) & ( 5 ( & + * C &2 ภ.) C++, C# ( ภ,!* 1 + 4* & & ภ&2 ) ... ! “ ! â€? 2* ( ) ภ& < ) ! 0 $ * @ & : & &2 2 & & ( ภSyntax 5 ) &4 !9 ภ& ' (ภ) ภHภภ) & 5 ภ! Algorithm (Logic) ภ! ภภ! ภ' (ภ) ! * ) &2+ ! ! & ' (ภ) , # ภ& 4* ,) )( *! ... & ),) ) 4 & ' (ภ), * 4* & ) ภ( ภ) 0 ภ2 , *!&) Syntax ) ภภภภ! , , * , ,) , * ภ* ภภภ! Algorithm ภ. ) ภ! ภ) 0 & , + * ! ! (1 & , , ) / ( 5( *!& ) ภ! Trick &2 ภ! ) ) ภ* & & + 4* & ) ) ภภ. ) 4(ภ* :; ' &ภ) + *ภ' &0 , *) ภ( $ 9 ) ) ( &# & ! & ,) ) & 8 55) - ภ4 , ( & &) #include <stdio.h>

int main(){ //This is one line comment /*This is multi-line comment Na-Ja */ printf(“Hello World\n�); return 0; }

! )! 1 ภ) ,!* ภ@ , 5 5 ภ' . 2 (,) * & #include) ภ& ) & (#define) ภ... * *!& # ! . ! 5 ! &2 * main ! ,!* ภภ@ * ภ+ * main 2* ภ&2 ภ! & & & & , & ,!* main ( ) /! & , ภ. * ภ@ ! main $ ! ) * ' (ภ) ! Run ' (ภ) ภ! ) Comment $ ! ,!* ' & C ,) ! $ ** - & $ภ% ; 5 % & $ŕ¸

) ภ1 ภ! ,!* ภ& & ภ@,!* * main

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ภภภ(Part I) ŕ¸

Computer Programming ( &) & ! ,) * ) * main ... ) 8 55 ... 4* ,), * , * 1 & 8 55 ) ภ) ' (ภ) * * & ,) * + ภ.,) $ , + &. 5 6 ! % (6 * 5 ... 4 & < ภI<) 1. Source Code ) &4 ! & * , ( 8 55 ' * 2. Compile ) &4 ภ! Source Code ( ( $ ,> 0 ) 4 Run , * 3. Compiler ) &4 ! + * Compile (ภ! ( ภ. ) Turbo C, Anjuta 4. Error ) &4 * 1 ' (ภ) + *,) ) 4 ' (ภ), * & 42ภ* a. Syntax Error ภ& Syntax 1 ) ) 0 ; ,) ) 4 ' (ภ), * &4* ,) (ภ*+ *42ภ* Compiler $ ! ภ! 1 , ( ภJ ) b. Logic Error ภ& ' (ภ) 1 ภ! ภ' (ภ), * ( ภภ/0,) B: ( 2* ) ' (ภ) * 8 55 c. User Error ) &4 !' (ภ) 42ภ( ! ภ+ * )2 1 8 55 ภ+ *+ ! ภ, + ! ภ< , ) / # * & ภ*!& 5. Warning ) &4 * 1 “ â€? ภภ' (ภ) ( &5! Compiler &! + * ภError ) , * ( ภภ&K ! ภ)( *! ภ( 8 5 + * + ( ภA! & ( *! ) ) ภ5 7 (' (ภ)( ภ) ) ) ! * ( *!ภHello World!!! ( ! !' ภ) ภ& ) ภ! ภ* & 80 * *!&' (ภ) ( ภภ/0 ) #include <stdio.h> // ' % ภ,> 0 stdio.h (standard input output header file) int main(){ // ) * main printf(“Hello World!!!â€?); // ( 1 ภ! Hello world return 0; // ภ( ' (ภ)) K&! &! ภ+ ! * } // main

1 ภHello World!!!

$ , * ' (ภ)( ภภ+ ภ& ' (ภ) + *& Pattern , ภ$ 2 ( ) * &

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ภภภ(Part I) ŕ¸

Computer Programming

#include <stdio.h> int main(){ // 5 ' (ภ) return 0; }

& ภ(printf) printf $ + *+ ภ( 1 ภ* ' &) % $ + *1

90 ภ) ) + ,!* ( ,) , * + ภ. $ , *) ) 2 2 ( ภภ! printf(“ * ! ) ! )â€?[, !( 5]); [, !( 5] ) &4 + ,) + ภ., * + ภภ., * (( ) ภ& )

- printf(“Testing textâ€?); ภ: Testing text printf(“word1\nword2â€?); ภ: word1 word2

+ ภ! )ภ( 1 ) ภ@< + * ! ) &2 !* & ( \n . ) &4 ... ) & ภ! ) ) ภ& ( * ) L& ,) 2*) ภ6, " ภ6, " \n \t Tab ( !* ! 8 ) + ) \r \a ภ, & ( ( ภ& Beep ( 2) \\ %s %c

\

( ( ! ภ<

\� %d %f

“

( ! .) ( @ &)

& ) ภ& ( ( ภ( *!ภ& $ &, ภ! (! ) % * $ ภ! ( + * ! ) ! )) + ) 2 ! & ภภ!

- 4 Code printf(“My Name is %s\n�,“Pong�); My Name is Pong printf(“Age : %d\t GPAX : %f\n�,20,3.94); Age : 20 GPAX : 3.94 printf(“\�%c\��,’A’); “A�

* ภ4* + * %s ภ! + * “ ! %c + * ‘ ( K&! ภ& & + ! * 4 , ( *!ภ) ( 2*( ภ,) & & 12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming 23ภ" ภ/ " % ( & &! ! * ( ... 2* ) 1. & ' (ภ)( & & ! * &5ภ* printf ( )

& ,) # + ภ+ J ) 4 ! )ภ( 1 printf *!& ภ& %d ) 4+ + 2 ( %[-][0]d [-] ) &4 + - ,) ภ., * %s ) 4+ + 2 ( %[-][0]s [0] ) &4 + ! , ,) ภ., * %f ) 4+ + 2 ( %[-][0][.0]f [.0] ) &4 + @ &) ,) ภ., * ) ภ! ) ภ* * &ภ) 2 ! ) ) & &( *!ภ%-5d ) &4 + * ! ) + #* & (-) ( & * & + ! 5 (5) %15s ) &4 + *+ + *) ! (,) ) -) ( & * & + 15 (15) %4.2f ) &4 & * & 4 ( ( @ &) 2 ( (.2) 4 Code printf(“My Name is %15s\nâ€?,“Pongâ€?); My Name is Pong printf(“Age : %5d|\t GPAX : %4.2f\nâ€?,20,3.94); Age : 20 | GPAX : 3.94 ภ! & + * . * ) ! ) * + ' &0 ภ23ภ" 1. & ' (ภ) ( 1

90 $ 12345678901234567890123456789012345 NAME LAST NAME AGE SEX Somchai Jaidee 20 M Pong Pean 21 M Pattara Jintana 22 F 2. ! ' (ภ) ( 1 & , ( & ภ... & ) ภ) ,) , * , ) #include<stdio.h> int main(){ printf(“%15s\tâ€?,â€?Test Line 1â€?); printf(“%-15s\nâ€? ,â€?Test Line 2â€?); printf(“%4sâ€? ,â€?Test Line 3â€?); printf(“\n%-4s\n\nâ€? ,â€?Test Line 4â€?); printf(“%|%20.4|sâ€? ,2.5); }

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ภภภ(Part I) ŕ¸

Computer Programming

" % & 3 !( ( ! ภ(Variable and Operator)

ภ& ! * )) ภ& ' (ภ)) ภ& * ภ& &( *!ภ! * Focus &2 !( ( ! ภ+ *) ภ4* % + ,) + * ,) * + + ! * 4 , , *

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ภภภ(Part I) ŕ¸

Computer Programming

(Variable) !( , ( 4 )& 8 &) !( * + * ภ. * )2 ) * )2 & 2 ( ! ภ< * ! ) ! .) ! @ &) ( ภ( + < # * )2 42ภภ. + 2 ! ' &) ภ( $ 2 ภ</ ( ) ) & (Signed) ( ( ,) ) ) & (Unsigned) ภภ</ ( $ ! .) ภ@ &) ( ( 5 5 & ) ( + ) * & ภ+ *) ( ) ภภ! !( ( ภ$ 3 1. ! .) , *(ภint ( long ( & ภ.ภ, + ; ) 2. @ &) , *(ภfloat ( double 3. ! ภ< , *(ภchar ( String (char[]) ภ9 & !( ( * ) 2!9 ภ@ !( ( ภ!( ภภภภ6 + *+ ภภ@ !( !( !( (= ) * ) [, !( (= ) * )]; !( ) &2 * ( *! ! ) * + ภ., *,) + ภ., * ภ+ &) 2 !( ภภภ! ภ!( + * ) * $ + *+ ภภ& !( * ) ภHภภ) & ( & ) + ภ*!& 1. ! + * ! ) ) & ( ( & ( &) 2. ภ< * * $ a 4 z A 4 Z ) & * + * ( _ ) ( <<< * ) 3. ภ< , $ ! ภ< ! ) & * + * ภ., * ( "% ) ! &+ 4. ) & ; & 32 !( ภ( &5 ,) ! ภ31 ! ... + , 4 ) 5. ! ภ< + * $ Case-sensitive ! a ภA 6. *** ! ภ& + * _ !( ! + * _ ภภภ, *' &,) 2* ! 7. "% ภ! (Reserved Keywords) # ) , ! + < # asm auto break case cdecl char const continue default do

double else enum extern far float for goto huge if

int interrupt long near pascal register return short signed sizeof

static struct switch typedef union unsigned volatile void while

_cs _ds _es _ss _AH _AL _AX _BH _BL _BX

_BP _CH _CL _CX _DH _DL _DX _DI _SI _SP

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ภภภ(Part I) ŕ¸

Computer Programming

- ภ% / ภ! & 89ภ%

: int a,b,sum=0; int sizeof; // ! float gpa; float 2g; // * *!& ! char grade=’A’; char name[50]; char this grade=’A’; //) !* ! % 9/ ! ; ( ! 2* ภ+ ) 1

1. int * )2 + * ภ. ! .) + * !& ! ) + ภภ. 2 , 0 ) 4 ภ. ! .), *

( -32,768 4 32,768 2 ) unsigned int * &ภ( ภ. ! .) ( 0 4 65,535 (4* ) signed ภ. ! .) !ภ) $ 2 ( ภ. ! ,) , *) 2. char * )2 + * ภ. ! ภ< 1 ! ‘A’,’c’,’5’ ( ภ! + * ‘ $ ! ภ! $ char) ( + 2

Compiler ,) ) $ ! ภ< ( ภ. $ ! ( ' &+ *) % ! ASCII ! ภ< 5 3.

4. 5. 6.

7.

+ * + ภภ. 1 , 0 ( -127 4 127) char[] (String) . - 9#- ! ; 4 , 7 ( $ * $ * )2 % ! 2* + * ภ. * ! ) “Pongâ€? , “Hello Worldâ€? , ) / ภ! + * “ $ ! ภ! $ String K&! & 2* ! ) ) & 5+ ! * 6 ( *!ภfloat * )2 ภ. ! @ &) + * !& ! ) 4 , 0 ภ. , * ( 3.4E-38 4 3.4E+38 ( ภ. @ &)42ภ* ) / 8 ภ) double * )2 * & float ( + * $ 2 float ภ. * )2 , * ( 1.7E-308 4 1.7E+308 ภ. @ &)42ภ* ) / 15 ภlong int int & ! (ภ! ) + * ภ. * )2 ) ภภ! int 2 4 , 0 ภ. * )2 , * ( -2,014,153,648 4 2,014,153,648 ( ! 0) & ) ( *! 2 ! 2 ภ) unsigned long int ภ. , * ( 0 4 4,294,486,648 ) / & long double double & ! + * 10 , 0 ภ. * )2 , * ( 3.4E-4032 4 1.1E+4032 ภ. @ &), *4ภ2 * ) / 18 ภ( ,) $ 5 ( ! & , ( ) &)

ภภ" - #"%ภ!( = * ภภ; x=5; ) & ! )! 5 , ภ. + !( x * 5 & ภ! + * x ) $ 5

1 2

ŕ¸

Compiler ภTurbo C American Standard for Information Interchange

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ภภภ(Part I) ŕ¸

Computer Programming

- #include <stdio.h> int main(){ char name[20]= “Pong�; int age=20; float gpa; gpa = 3.94; printf(“My Name is %15s\n�,name); printf(“Age : %5d|\t GPAX : %4.2f\n�,age,gpa); return 0; }

1 ภMy Name is Age : 20 |

Pong GPAX : 3.94

- & (Constant Variable) ภ* ภ* + 5 ,) ) ภ& ! * !9 ภ* &2 + ! ! )! 1 ภ( ! &!ภ#include) + ! * ( ภ5 ภ* * + * #define ) 2 ( #define !( * ภภ. ภ,) ) ; #include <stdio.h> #define PI 3.1415926 int main(){ printf(“PI is %f\nâ€?,PI); return 0; }

1 ภPI is 3.141593

& % 9/ (scanf , gets) scanf + *+ ภ* )2 ภ&0 0 ' & * ) &2 ภ* ! ) ! ) gets + * * ! ) ภ&0 0 ( * ! ) & &!) ' & ภ. + !( ,!* scanf(“ * ! ) ! )â€?[, !( ]); gets( !( char[] ); * ! ) ! ) + * %s,%f,%d $ ภ( $ ) ภ* ,) ภ&) !( ) 4* $ &!ภchar[] . - % & % " % 8% . -# - /% #"%# - & " % % ( & , ภ)

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ภภภ(Part I) ŕ¸

Computer Programming

- #include <stdio.h> int main(){ char name[20],school[30]; int age; printf(“Please Enter Your Name : �); scanf(“%s�,name); printf(“Please Enter Your School : �); gets(school); printf(“Please Enter Your Age : �); scanf(“%d�,&age); printf(“Name : %s\n�,name); printf(“School : %s\n�,school); printf(“Age : %d�,age); return 0; }

1 ภPlease Enter Your Name : Pong Please Enter Your School : SUT University Please Enter Your Age : 20 Name : Pong School : SUT University Age : 20

+ ' &+ *) ภ!* ! *!&+ 2 ( *! ภ1

90 ! ภ, + * ,) ภ1

ภ( ) !9 (ภ* 4* * ภ+ * scanf ) ภgets #"%# % % $ < “%[^\n]â€? “%sâ€? ภ& @<+ + scanf 4* * ภ+ * 6 ! ภ< + + *+ , + [ ] 4* * ภ6 ภ< B,0,1,2,3,4,5,6,7,8,9 ภ. + * * ! ) ! )! “%[B0123456789]â€? + ภ</ * )4* ,) * ภ+ * + * ^ * 4* ,) * ภ+ *) ! a + * ! ) * + * * ! ) ! ) $ “%[^a]â€? ) / ( *!4* scanf ภ< . - % ภ) ภ& 2

) ภ, ! ! * ภภ@ name[20] ) &4 ) 4 ภ. * ! ), * 19 ! ภ< 4* * ภ+ * ภ. , * 20 ! ภ. * + $ 21 ( (** ภ... & ...,) , * ภ, ) 23ภ" 1. & ' (ภ) ภ12*+ * ' & $ ! .) ! @ &) ( & 1 ! ( *! ŕ¸

( 1

90 ภ* * ) ภ! $ !( , 2. & ' (ภ) !( ! .) 2 ! ( *!( 1 ภ! !( ( *!( 1 ภ( & 'ภ) 12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming

ภ) , * ! ( ) ( *! ) ( *!( 1 & ) ภ. ภ, &2 ) * ) ! ภภ* ' & ! ภ1) & ภ( $ 5 ( ! ภภ& !ภภภ( ) ! ภ/ @ 0 ! ภภ! ภ! ภภ( ) ,

ภ= 6 ( ! & &) ! ภ/ @ 0 ) Operator +

ภ+ * ภ!ŕ¸

! & a=a+b;

a= +3; (+3 , *ภ. 3)

c=3+5; a=a-b; c=3-5; a=2*3;

b=a+5; a= -3; b=a-5; c=a*b;

-

ŕ¸

*

ภ2/ ภa=a/2; ภ@< a=3%2;

/ %

b=5/3; (1

90 $ 1) b=a%4;

.ภ* & 9 & & &! + < # int ภint , * int 5 $ int ,3 ภ. $ int ภภภ1

90 ) ! ) 1.6666‌ ( Compiler * & + * $ int $ , ) ภH Compiler ,) + @< @ &) ภ+ *, * $ 1 ( ( * . 1 ) ) 4 + * ภ& !( , * &ภ! Type cast , *' &ภ) ( * ภ& $ ) * !( * ภprintf(“%.2fâ€?,4/(float)5); 1

90 ภ) $ 0.80 ภ& + * 5 $ float ภŕ¸

ภ# ภภ" - / & - Operator ! & =

n=8;

+= -= *= /= %= ++

n+=8 n-=8 n*=8 n/=8 n%=8 ++n n++ --n n--

--

! ) ) & 8 , + + !( n n = n+8; n = n-8; n = n*8; n = n/8; n = n%8; n=n+1; n=n-1;

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming ) ) ) & ++ ภ-- * ; & &! 2 ( ( *! * + ) ภ&

num1=8; num2=++num1 -3;

num1=8; num2=num1++ - 3;

, *

num1=9 , num2=6

num1=9,num2=5;

! ) ) & ++ , -- 4* + * & ) &4 ! 4* ++num ) &4 ) num ภ1 ( *! & num ) + * ( 4* num++ ) &4 num ) + *ภ( *! & ) num ภ2+ ' * * (-- ) ภ,) & ภ& # ) &5 ++ ภ- & - ภ- ++ "/ & - "/ ( ภ! ))

ภภภ. ภ! ภ* + * ภ@ 0 + ภ!/( 55 ภ* ภ& ! + < # ) ! 0 - 0 ( + 5ภ. ) . -# - 0 - (( + ! ) &) + * 1 ( ( 1 , * ภ) & ภ. , * 1 ) ภ) ' ) 2ภ) &ภ& Operator == > < >= <= != && || !

! &

! ) ) & ภa==b ) ภภ! a>b * &ภ! a<b ) ภภ! ภa>=b * &ภ! ภa<=b ,) ภa!=b (a>b)&&(a<c) ( (a>b)||(a<c) 9 (not) !(a<b)

- - 4* ภ+ * a=5,b=7,c=10

, *

a>b a<(c-b) (a+b)>c (a*+7)%2==c%2 c!=4 (a>b)&&(c<b)

0 0 1 1 1 0

. ! , * ภ) & , * ภ) $ 0 1 12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming ภ% ! ภภ! ภ( , , ภ+ * ภ, * ) 2 ; ) & & ภ! / ) !& " * + * (# & ) ) &

! ) ; ภ2 #* &, ! () . 7% ! ++ -- (type cast) | #* &, ! * / % | #* &, ! + | #* &, ! < <= > >= | #* &, ! == !== | #* &, ! && | #* &, ! || V . 7% = += -= *= /= %= & ,) ) 4 9 &ภ) &, * ) 2! , ( !( ) 1 , ) $ , * ภ( 1 ) ภ* . ! ,!* 42ภ* (... + * ( 4* 9 & & ภ! ) ( *! & ( 2 ภ! ( *! $ < ! & ภ! ) $ - x=3,y=4,z=7,a=1,b=2 ' &0 x=++y -3%2 a+=b%2-5*3

x=

y=

' &0 x=y++ - 3%2 a+=b%(2-5)*3

x+= 3%2 + y++

x+= 3%2 + ++y

x= y++ + ++z

x= ++y + z++

x=x++

x=++x

x=(a=b++)+2*b

x=(a=++b)+2*b

x=

y=

1)! . 1),) ) 4 9 &, * ! !* + * + * , * ภ( !&ภ) ภ) $ - &. %

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ภภภ(Part I) ŕ¸

Computer Programming 23ภ" 1. & ' (ภ) ! .) 3 ! ภ12+* * ( *! ภ6 & 2. & ' (ภ)( ภ!& # ) $ > ( ! ภ+ * (2.54 cm = 1â€? ,12â€? = 1 > ) 3. & ' (ภ)( ภ@ > ,8 0 $ @ # # & 4. & ' (ภ) ! ) ภ12*+ * 2 ! ( time1,time2 ) ' & ภ. + ! .) ' & time1 !

1330 ) &4 13:30 ! time2 ! ! ') ภ340 ) &4 3 !') ภ40 ภภ!ภtime2 * ภtime1 ( *!( 1

90 ! & 1 ภ' (ภ) Please enter time1 : 1330 Please enter time2 : 340 Time 13.30 + 3.40 = 17.10 5. & ' (ภ) ! ! ภ12*+ * ( *! ภ( + * $ !') ( ! )

7450 ! ภ. $ 2 !') 4 ภภ10 ! 6. !/ ! ภ) + ; + &)1 1* ) * ภ!* ( * & !) ภ12*+ * 7. !/ * & ) ภ! ภ) ภภ& )1 1* ) * ภ!* ( * & ! ภ12*+ * 8. &) + ; &2 + ! ภ)(1/4 ! ภ)( ภ+ * ) 9. &)1 1* + ; &2 + ! ภ) 10. * ) 10 ( *! ภ! 2 ( ! 11. ! num ) ภ12+* * ( num ( 0 4 9999) ( *! ภ1 !ภ! ( ภnum 2345 ภ. $ 2+3+4+5 = 14 $ * 12. ! num ) ภ12+* * ( num ( 0 4 9999) ( *! ภ1 !ภ! ภnum 6 2 2345 ภ. $ 2+4 = 6 $ * $ " % (+ * ... K&! ,) 4ภ2 + -_-!!! )

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming

" % & 4 ! + ( ภ! 2

ภ& ! * )) ภ& ' (ภ)) ภ& ภ( ภ) ( * focus ภภ! )( ) ! * 4 ! $ ! * $ !+ ภ& ' (ภ) & &! ( ! ) , ,) , * ) ภ) - Syntax - % % - . % " ภ!& Algorithm ภภ- ,) & ! )ภ& ภ!

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming If‌else‌ If‌else‌ $ + *+ ภ+ ) * + ( 8 55) &ภ! & 8% (if) ) ! ( , ) * ŕ¸

* !) ภ( ) ) " ภ. -(else) ภ.ภ) ภ( ) . ) (( (#! ) . , *! ) ) * ! )5 # ) ' ภ$ $ . , * ) ' (ภ) ( , ) ( *!) ภ+ * ภ) ภภ! 1 ) ! & + * if else ) ภ2 ( ) *!&ภ3 ( if ( , ){

if ( , )

s;

;

}

else

if ( , ) {

; if ( , ) { ;

; ‌ } else {

; ‌

‌ } else if ( , 2) { }

} ‌ , 4 , 4* ) } else {

; ‌ }

( 1 () ) #* &) ) ภ2 4* ภ. ( 4* . ภ.,) , ( 2 () ) #* &) ) ภ2 4* 4* . ( 3 () ) ! ) 4* ) ) ภภ! 2 , ภ. else if , &5 ! else * & ,) * ภ/ + 5 & !& . + ! + ; $ 0 ภ, *!& ) &( ภ( *!+ *1

90 $ . ภภ$ &! ,) $ * + { } (&ภ+ * . + ( ) ) ! ) ( 4 * ) ) ภภ! 2 * + { } % ภ& ' (ภ) ! ) ภ!* * , + * ภ! + &2 + ! , ภภ! & ! ) ภ!* * , * + ŕ¸

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming 9

- ภภภ#include <stdio.h> int main(){ int x; printf(“Please enter even number :â€?); scanf(“%dâ€?,&x); if (x%2 == 0) printf(“It\’s even number\nâ€?); else { printf(“%d is â€?,x); printf(“Odd Number\nâ€?); } }

1 ภPlease enter even number : 20 It’s even number

1 ภPlease enter even number : 11 11 is Odd Number

23ภ" if-else 1. & ' (ภ) ! .) n ภ12*+ * ภ12+* *ภภ! ) ภภ! 30 ( $ 2 + * ) 0! “You’re rightâ€? ภ,) + + * ) 0 ! “You’re wrongâ€? 2. & ' (ภ) ! .) score ภ12*+ * ( *! ภภ' &) ภ/M0 80 , A 70-79 60-69 50-59

B C D F

ภ3. & ' (ภ)4 )( @ ภ> ,8 0 $ # # & ภ# # & $ > ,8 0 ' &ภภ< 1 !) ภ12+* * ภ$ C + * @ # # & ( $ > ,8 0 ภ$ F + * @ > ,8 0 ( $ # # & ภ,) + * + * ) 0 ! “You’re wrongâ€? 4. & ' (ภ) ! .)) 10 ! ( *! ภ2 * ) 6 & $ & &. % ภIf-else

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- 24 of 40 -

10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming for loop

! loop ) ภ! # for loop $ ภ! # ( for ภ! # ( ! + ; + *ภภ! # ) ภ! ( ( , *) ( ภ! # ( ) ภ) ! index + *+ ภภ! , 4 + ( *! index &2 + ! ) &)) ภ+ * i , j , k , l ( ! ) &)) ) 2 2 ( for loop ภ& ภ! for ( ) * ; , ; ) for ( ) * ; , ; ){

;

s; }

& ภภ! { } + * ภภ&!ภif-else 4* ) &+ * for & &! ,) $ * + { } ( 4* ) ) ภภ! 1 * + *!& ภภfor ) & $ Algorithm ภ., *( 1. ) ) * 2. ! , 4* ! $ . ภ. ภภfor ภ$ + *

ภ3. &+ for 4. 5. ภ, + * 2 9

- ภ/ ภ- #include <stdio.h> int main(){ int num,i; printf(“Please enter a number :â€?); scanf(“%dâ€?,&num); for (i=0;i<num;i++) printf(“%d â€?,i); } #include <stdio.h> int main(){ int num,i; printf(“Please enter a number :â€?); scanf(“%dâ€?,&num); for (i=1;i<=num;i++) printf(“%d â€?,i); }

1 ภPlease enter a number : 10 0123456789

1 ภPlease enter a number : 10 1 2 3 4 5 6 7 8 9 10

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ภภภ(Part I) ŕ¸

Computer Programming 23ภ" 1. & ' (ภ) ! ! .) !ภภ12*+ * ( *! ภ) 0 ภ! 4 1 ( ) 2. & ' (ภ) ! ! .) !ภภ12*+ * ภ12*+ * + + * ) 0 ( 1 4 ! ' & ) 0 3. 4. 5. 6. 7. 8. 9.

6 ภ2 + * ) 0 ( 0 4 ! ' & ) 0 6 2 & ' (ภ) * &ภ* 2 ( + * ( & ' (ภ) ! ! .) !ภ( *! ภ) 0() 2 2/ ! & ' (ภ) 1 !) ( 1 4 N ) N $ ! * ) & ' (ภ) ! .)) 10 ! ( *! ภ2 * ) 6 & & ' (ภ) ) 0 ภA 4 Z & ' (ภ) ) 0 ภZ 4 A & ' (ภ) ! ภ< 1 ! ภ12+* *( *! ภ) 0 ภA 4 ! ภ< ( *! ) 0ภ, & A ภPlease enter a character : L ABCDEFGHIJKLKJIHGFEDCBA

10. & ' (ภ) ! ! .) ( *! ภ) 0 &) ) ! )ภ!* ภ! .) Please enter a number : 4 **** **** **** **** 11. & ' (ภ) * &5ภ* 10 ( $ 2 &)ภ! Please enter a number : 4 **** * * * * **** 12. & ' (ภ) * &ภ* 11 ( $ &)ภ! ! ภ< Please enter a number : 4 ABCD E F G H I J K L

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming 13. + * ! ) 2* , * ภ* 10,11,12 ( *! * 2 Character Diamon Please enter a number : 4 A B C D E F G H I J K L 14. + * ! ) 2* ภ* 13 ( *! * 2 ) &)ภ! Please enter a number : 4 A BC D E FGHI 15. & ' (ภ) * ) &)ภ!

$ & &. % ภfor loop

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming while loop & do-while loop while loop &)+ *ภ) ภภloop ' (ภ) ) 0 ( & ) ! 2 ) ! ,) ( (

&5 ) / ) ! 2 ( ) ภ</ &ภ! for loop .ภ* & ( ! ) while loop ) 2 2 &2 ! dowhile loop # ) ภ</ ) ภwhile loop ( ภ&! &K ! 2 2 ( ( ภภdo{ while ( , ){ s; s; }while ( , ); } ภwhile ภdo-while 1. ! , ! $ ,) ภ! 1. &+ do-while loop . ภ. loop while ภ+ * ภ2. ! , ! $ ,) ภ, ! . ภ. loop ภ+ *ภ, 2. &+ while loop * 1 3. ภ, * 1 * ภwhile ภdo-while ภ! ภ, $ . ( ( ภwhile ,) &+ 2 & ( do-while , * ภ1 ( ภ! do-while , * ภ&+ loop & * & 1 ) ( while ภ. ) , & $ &2 9

- ภ/ #include <stdio.h> int main(){ int num,i; printf(“Please enter a number :â€?); scanf(“%dâ€?,&num); while(num>0){ printf(“%d â€?,num); num--; } } #include <stdio.h> int main(){ int num,i; printf(“Please enter a number :â€?); scanf(“%dâ€?,&num); do { printf(“%d â€?,num); num--; } while(num>0); }

1 ภPlease enter a number : 10 10 9 8 7 6 5 4 3 2 1

Please enter a number : 0

1 ภPlease enter a number : 10 10 9 8 7 6 5 4 3 2 1

Please enter a number : 0 0

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming 23ภ" 1. ภ' (ภ) ภ( BEภfor loop ( + * & , + * while loop ( 2. & ' (ภ) ( 5 – 20 ภ12*+ * ภ12*+ *ภภ1 + * ! “Wrong numberâ€? ( *! ภ+ ) ภ! 12*+ * 42ภ* 3. & ' (ภ) 10 ภ12*+ * ' & ภ. * &2 ! 0 – 10 ( *! ภ2 4. & ' (ภ) * )2 5 ภ*!& @ (‘F’,’M’) & (int 20-50) ( ภ(weight) 4* $ 12* & & 30-50 ภ50 – 60 12* ; & 20-30 ภ45 – 55 ( *! ) 0 ! “GREATâ€? 4* ,) + * ) 0 ! “HOHOHOâ€? 5. ! 2 ! ภ12*+ * a ,b ' & 0<a<10 ( 20<b<40 4* ,) &2 + ! ภ!+ * ) 0! “ERRORâ€? ( ! + ) ) , * a,b ( *!+ * ภ) 0 2 ( a 4 b 8 ...Break, Continue break; ( continue; $ + *+ ภ! ) loop ' & break; ,!* ภภภ2 switch (...ภ& ) ' & ภ+ ( continue; $ + *, * 6 2 ) + 2 ' (ภ) ,) + 5 ( ภ, ! , + ) ( &5! * &ภbreak; ( , )+ ) ( break; ภ, & ( ) & 4* $ for loop ภ, ภ( *! , ! , ) $ - while, do-while, break / continue;

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming Switch‌case switch‌case $ ) ภ</ * &ภif‌else & , ) ภภif‌else ) ภ&

, 6 .ภ5 ) 2 2 ( switch( !( $ , ){ ! & case 1 : s; switch(x){ case 1 : printf(“X is Oneâ€?); break; case 2 : printf(“X is Twoâ€?); break; case 3 : printf(“X is Threeâ€?); break; default : printf(“X is otherâ€?);

break; case 2 : s; break; ‌. case n : s; break; default : s;

}

}

ภ! & + *ภ. ! 4* x =1 ภ. ) 0 ! “X is Oneâ€? 4* x=2 ภ. ) 0 ! “X is Twoâ€? 4* x=3 ภ. ) 0 ! “X is Threeâ€? ( 4* ,) + *ภ. ) 0 ! “X is otherâ€? default ภ/ ,) + ,!*+ case ภ* ( *! &+ default ) ภif‌else &5 ภdefault ภ. ) ภelse ! 4* 4* ,) * ภ/ , &ภ. , ) / $ & % $ @< (,) , * ภ, ) ภ. ภ! ) ภ+ break; ภ5 case ) 0 & + * 2ภ4* ,) + break; ภ, .... 1

90 ภ( ภ, ) 4,) ) ภ( ) ภ. & ,) , * ภ. ) ภ! & switch(x){ case 1 : printf(“X is Oneâ€?); case 2 : printf(“X is Twoâ€?); case 3 : printf(“X is Threeâ€?); default : printf(“X is otherâ€?); } 4* x=1 ภ. ) 0 “X is OneX is TwoX is ThreeX is otherâ€? 4* x=2 ภ. ) 0 “X is TwoX is ThreeX is otherâ€? 8 55 . 4 ภbreak ( ภ& ) ) &5 switch & $ภcase % break; < & "/ $ $ŕ¸

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- 30 of 40 -

10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming

" % & 5 >: ภ0 Function

ภ& ! * ภ* + + * ) 4 & ' (ภ), * ! * & ภ! & ภ( 1)ภ) ! ) & ' & * + ภ! ภ&+ ,parameter ( return value >: ภ0 ( ภ. , *( *!

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10/16/2008 11:01:00 PM

ภภภ(Part I) ŕ¸

Computer Programming >( ภ4 ) * >: ภ0 , ... ) ภภ! ภ! ) & (&ภภภ' (ภ) $ ภภภ! ภ& & (Module) ... (& &2 + J ) ' &ภ! ภ& & ) ภ, 4 ! * ( ภภ*) ) ) ภ! ภ&2 main ภ. + ( ! *) + * , * )* , ภ( ภ+ 4!* & ( function ) 4 ! ภ! ภ*) + * & , ( ( *! & function , * ) + * main + * ภ. $ *) &+ main main $ >: ภ0 + < # # 4 ! $ >: ภ0 ( ภ! Compiler *!& & ( *!( ! main , &ภ>: ภ0 , ) ภ. ( *!( ( * 2* ) ! ) ,ภ) ! ( *!) 2!9 ภ) >: ภ0 ภ& ภ! Parameter

Function

!( + *>: ภ0

Return Value

ภ) & &ภ>: ภ0

>: ภ0 + ! Parameter * , + *ภFunction & ภ! ภ&+ Function ( ภ) + *ภ&ภ) (Return Value) ) 2 2 ( ภภ@( ภ&ภ+ *ภภภ! ภภ@ ภ>: ภ0 ( !( + *>: ภ0 ){ s; return ภ; //+ ภ/ ) ภภ}

ภภ@>: ภ0 * ( (Prototype) ภ>: ภ0 ( !( + *>: ภ0 ); ภ&ภ+ *ภ/ )ภภ!( + * = >: ภ0 ( + *>: ภ0 ) , * ภ@); ภ&ภ+ *ภ/ ,) )ภภ>: ภ0 ( + *>: ภ0 ) , * ภ@); - & - ภ/ ) ภ!( & ( )) void ภภ! ,) ภ(4* $ void ,) * ) return) & - #"% ภ@ ) ภภ!( & ( ! ( !( *!& ) & , (comma) ' & ) ภ@ . ,) ) ; D * & !& >( ภ+ * ภภ&!ภ!( & ( ! + ภ+ * >: ภ0 # ภ>: ภ0 ) &2 ( *! &+ ) &2 + main . ! ) ภภ@>: ภ0 * ( + *+ ภ/ & ภ& & >: ภ0 ,!* main ( ภ& main ,) 2* ภ( *! + * error , * * ) ภภ@>: ภ0 * ( ,!* ! * main ,!* &+ main ภ., * (+ ภ/ ,!* &+ main, main ) 4+ *> : ภ0 , *) ภภ@ * ( &ภ! Prototype # ) ภ( ภภภ@>: ภ0 ( & ภ{ $ ; D * & & 12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming >: ภ0 )ภ&ภ+ *> : ภ0 * & ,!* >: ภ0 ! &ภ+ * ) ,) error ( 2ภ/ main $ ! & ) ) 2 ! & ภ& ' (ภ)ภ& ภ! ,) + *>: ภ0 (Before) + *>: ภ0 (After) #include<stdio.h>

#include<stdio.h>

int main(){ int a,b; do{

int getnumber(char strwel[],char strerr[]){ int a; do{ printf(strwel); scanf(“%d�,&a); if(a>=0&&a<=50) break; else printf(strerr); }while(1); return a; }

printf(“Please enter a :�); scanf(“%d�,&a); if(a>=0&&a<=50) break; else printf(“Error Na�); }while(1); do{ printf(“Please enter b :�); scanf(“%d�,&b); if(b>=0&&b<=50) int main(){ break; int a,b; else a=getnumber(“Please enter a:�, “Error Na�); printf(“Error Naja�); b=getnumber(“Please enter b:�, “Error Na Ja�); }while(1); printf(“%d+%d=%d�,a,b,a+b); printf(“%d+%d=%d�,a,b,a+b); } }

ภ! & * * . ! ภภ+ *>: ภ0 + * main & ) ภ( ,) * & do { ‌ } while &5 *!& & & &!ภ. ) 2 /0, * ภ& + * main & *!&! $ ' (ภ) , >( ภ0 9 ! )& ! String strcat() ภString ) ภภString strcmp() ภ& & String 2 ! strcpy() ภString 2! ) , ( ) 4 , *+ “C Programming for Beginnerâ€?) strlen()

isalpha() islower() isupper() isdigit() isspace() tolower()

toupper() ceil() floor() pow() sqrt()

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming 23ภ" 1. & ' (ภ) * )2 + *ภa,b,c # $ ! )& ! * ) ) &)( *! + *ภ>: ภ0 area()

2. 3. 4. 5.

# $ >: ภ0 ภ!/ ) &) ( *! ภ+ * main ( (+ ภ/ * )2 a,b,c $ + *! + ) ) ภ& ' (ภ) * )2 ( name , & >: ภ0 backward() >: ภ0 ภภString ( *! + *ภmain , ) 0 & ' (ภ) * )2 ! ! .) 3 *!&>: ภ0 findMax() ( *! ) ภภ) + * main ( 1

& >: ภ0 !/ factorial & >: ภ0 isTriangle() ' & * )2 ! 3 ! ( *! ภ) $ 0 1 ภ! ) ) 4 ) * 3 &), *+ * 1 ภ) ( 4* ,) + * 0 ภ)

$ & &. % & ภfunction

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming

" % & 6 )? !( (Array)

ภ& ! * , * * ภ4 ภ/0 * ) ( 8 55) ( ภ. $ ภ</ Array + ! * ) ภภ., * ) ) $ $

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming Array

ภKeyword &0# ภภ& “Array * )2 &!ภ) ภ( ( ภ( !( ( !) index ( ) ) 6 ( !â€? ... ) ภ( * ภ+ & & ภ# ภ$ % 9/ ภ!( ,) , *) & ! &!( ) &5 ! ภ!) ) ภ( ) &!ภ( ภIndex Subscript ภ* Index ภ. ) ) & & ) 9&) ) ภ. ) (

* ( ภภ( ภภ.+ * * &!ภ* .9/20 2 , ) / &ภ* ( * )2

) ภ. * &ภ! .9/20 ( 4* &ภภ. * &ภ! * .9/20 2 * + ภConcept ภ) ! ( *! , * ) 2! Array * $ & , ...( ภ! ภ! ) 4 ! * ภ, *+ * Array , ( *! & ,) 2* ! ( ) # char[] , * &ภ! String String 4 ! $ Array of Char &0 char ( *! !, ภ! $ &0 ภ. [] , 4* . [] * ภ+ * 4 Array ,!*ภ) 2!9 * &0ภภ! !( !( [ &0] (={ &0}); (={ &0}) ) * ภ+ *ภ&0 ( ( ภ& ) 4ภภ&0 4* ,) + * ภerror !9 (ภ*) 2 ! &0 ,) ภ.,) * ภ+ * ภภ( * *!& ) & , (comma) ภ! ) ภ</ * &ภภภ@ !( 9 ) ( ) [] ) ) ) 2 ! & ภภ@ !( &0 ( 42ภ( 1 ภ& ภ!

' &8ภ9 %

' &: int x[]; //,) + int x[10]; int x[5]={1,2,3,4,5,6}; //ภ,) ภint x[5]={1,2,3,4,5}; int x[] = {1,2,3,4,5}; char name[] = {‘H’,‘e’,‘l’,‘l’,‘o’}; char name[]= “Helloâ€?; // @< char[]

name[] + + ! & ) ,) ภ2+ sizeof ! ภภ@ & , * ) ภ1 ภ! ! ภ< ) ภ* ‘\0’ ภ! $ ภภ! $ String ! ( ภภ@( ( ภ,) * ‘\0’ ภภ6 ภ. - 8 printf % %s . % sizeof $ + ภ!( ) 4 !9 &ภ&0( !ภ* ... &5 !9 !( [index] + *) ! $ ) !( ! , & ) 2 ! & ŕ¸

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming

- #include<stdio.h> #include<conio.h> int main(){ int x[3]; x[0]=4; x[1]=2; x[2]=1; printf(“%d+%d+%d=%d�,x[0],x[1],x[2],x[0]+x[1]+x[2]); getch(); return 0; }

1 ภ4+2+1=7

* ภ! &0 ) index 0 , 4 &0 -1 ภ&ภภภ, ??? ( , ภ.,) 2*( 8 55 ,) error * ! index ) 4+ * !( ภ. ( *! &ภArray ' &+ * ! ( ( index , * ( ! + ; &)+ * ! ( i,j,k) ) 2 ! & ภ#include<stdio.h> #include<conio.h> int main(){ int x[7],i,sum=0; for(i=0;i<7;i++) x[i]=i+1; for(i=0;i<7;i++) printf(“%d â€?,x[i]); getch(); return 0; }

1 ภ1234567

ภภ&0& ) ภภ/ $ &) ... ) $ Matrix ภ., * ) ( $ & , ภ., * ,) ! ภ... ( & ภ+ *) ( ) ! $ Array Array 2 * int x[2][3] ภ. ) &0 ( 3 ! &2 2 ! ( ภ! )) x[0] $ &0 3 ! x[1] $ &0 3 ! ภ$ &0 #* &2 + &0 2 ! & ( *! & & ภ! & ภ* ( *! * + ŕ¸

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming

- #include<stdio.h> #include<conio.h> int main(){ int x[2][3],i,sum=0; for(i=0;i<3;i++) x[0][i]=i+1; for(i=0;i<3;i++) x[1][i]=2*i+1; for(i=0;i<3;i++) printf(“%d �,x[0][i]); printf(“\n�); for(i=0;i<3;i++) printf(“%d �,x[1][i]); getch(); return 0; }

1 ภ123 135

23ภ" 1. & ' (ภ) ! ! 15 ! ภ12*+ * ( *! ภ( ) ) ( *! 2 2. 3. 4. 5. 6. 7.

( 1 !) ) & ' (ภ) n ภ12*+ * ' & 5<n<15 ( *! ภ! ! n ! ภ12+* * ( *!+ *( 1

90 ( * 1 ' (ภ) * &ภ* 2 ( ! + * ! , * 6 ! ,) ภ20 ( *! ภ( 1

& ' (ภ) String 1 ! ภ12*+ *( *! ภ! ! ) 0+ ; ! ) 0 .ภ( ! ( *! ) 0 ภ* & ' (ภ) String ภ12+* * ! 5 !( *! ภ! !, ) ! )& !) ภ& ' (ภ) ! ! .) ภ12*+ * ( *! ภ) 0 2 ( ' &ภ) 0 ภ& ' (ภ) * ภ< &+ String ' &ภString ( ! ภ< * ภ* ภ12*+ * ( *! ภ) 0 * ! ) ภ) ! &+ String ) ! ภ< ภ! ( ( + * String : The river is no return Character : r Found character r = 4 in the position : 5 9 17 21

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming

- 6,# -. - 30 $ ภ6 & * ภ& ภ* ) * ( *! & 2 6 & * $ ( 4 * , ภ. ,) , * , * + ! 2ภ( *! 2ภ6 &! ภ) & ภ,) ภ. & ) 4 ) 0 ) )( *!ภ) )ภ& ภ! *** ภ5 * ภภ! ภ* * 2 * 5 ภ2,) & , * ! & + ' * ' &0 ) ; &2 ( *! ,) ภ) &2 ( *!ภ.,) * + * , ) ภ,) )ภ. * + * , ) *!& ภ& 1

90 * 2! ) !* ! ( ภ& )

% ภ/ 4 1/2550 % & 1 ( % ภ/ 4 1/2550) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24.

#include<stdio.h> #include<string.h> ------------- & --------------; void main(){ int i,n[10],x; ------------- & --------------; for(i=0;i<x;i++){ n[i] = 'A'+i; if(n[i]%2==0) printf("n[%d] = %c\n",i,n[i]); else printf("n[%d] = %d\n",i,n[i]); } } int test(){ int k; char str[11]; do{ printf("Enter a string (5-10 characters) : "); gets(str); k=strlen(str); }while(------------- & --------------); return k; }

& 3 >: ภ0 prototype >: ภ0 test() int test() & 6 + *+ ภ&ภ>: ภ0 test() x=test() & 22 + *+ ภ& & ' &+ * || $ ! ) k<5 || k>10

& 22 + *+ ภ& & ' &+ * && $ ! ) k>=5 && k<=10

4* 12*+ * C “AAAAAAâ€? * ) ( ภn[0] = n[1] = n[2] = n[3] = n[4] = n[5] =

65 B 67 D 69 F

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming % & 2 (ภ/ 4 1/2550) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16.

#include<stdio.h> #include<string.h> void main(){ char str1[30]="Trimester 1/2550" ,str2[30]="Com Pro"; int n1,n2,n3; n1=sizeof(str1); n2=strlen(str1); strcpy(str2,"SUT"); strcat(str1,str2); n3=strlen(str2); printf("n1=%d\n",n1); printf("n2=%d\n",n2); printf("n3=%d\n",n3); printf("str1=%s\n",str1); printf("str2=%s\n",str2); }

ภภ' (ภ) ( ภn1 = n2 = n3 = str1 = str2 =

30 16 3 Trimester 1/2550SUT SUT

% & 3 (1/2550) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20.

#include<stdio.h> void main(){ int test[3][5]={15,14,13,12 ,11,10,9,8,7,6,5,4,3,2,1}; int i,j,a=0,b=0,c=0; for(i=0;i<3;i++){ b++; for(j=0;j<5;j++){ if(j%2==1) continue; c=c+test[i][j]; a++; i++; } } printf("i=%d\n",i); printf("j=%d\n",j); printf("a=%d\n",a); printf("b=%d\n",b); printf("c=%d\n",c); }

ภภ' (ภ) ( 1 ภ* i= j= a= b= c=

4 5 3 1 24

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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ภภภ(Part I) ŕ¸

Computer Programming % & 4 (1/2550) 1. #include<stdio.h> 2. void main(){ 3. char ch='C'; 4. int i=1, total=0; 5. printf("Output: "); 6. while(i){ 7. if(ch>'E') 8. i=0; 9. else if (ch%2==0) 10. ch=ch+2; 11. else if (ch<'E') 12. ch--; 13. printf("%c ",ch); 14. total++; 15. } 16. printf("\nTotal = %d",total); 17. }

ภภ' (ภ) 1

90 Output: B D F F Total = 4

$ % ภภภ! & ( * ) &) ( , & ) ภ( *!) * )+ 5 !)ภ( ! ) . , * !. ) ) http://student.sut.ac.th/comclub ภ) 4 ) ,) * + + ! , ภ., ' 4 ), * ' ?# ภ/ ภ!& . ภภ# 1 ภ- . % $) - < / / ภ,= ภ, ภภ- / ภ5 “ â€? / 5 5 * 5 ) ) ) ! 0 + *ŕ¸

& / ภภ0 ' . :9% : ŕ¸

KAPONG CPE#11

:9%

12* & KAPONG CPE#11 Com-Club Homepage [http://student.sut.ac.th/comclub]

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