THE UNIVERSITY OF DODOMA
College Of Informatics and Virtual Education
NAME: Makame, Makame H REGISTRATION No: T/UDOM/2010/00410 PROGRAM: B Sc. Computer and Information Security
ASSIGNMENT NO.2
COURSE NAME: Introduction to IT Security
COURSE CODE: IS 102 COUSE INSTRUCTOR: Florence Rashidi
Question: Write a C++ program that convert plain text to cipher text.
Tuesday, August 16, 2011
Answer #include<iostream.h> #include<conio.h>
void main() { char alpher[]="abcdefghijklmnopqrstuvwxyzabc ABCDEFGHIJKLMNOPQRSTUVWXYZABC"; char cipher[50]; char word[30];
cout<<" Enter your plain text"<<endl<<endl<<"\t"; cin.get(word,30); int k=3; int i=0;
while(word[i]!='\0') { for(int e=0;e<59;e++) { if(word[i]==alpher[e]) { cipher[i]=alpher[e+k]; e=60; } } i++; }
Tuesday, August 16, 2011
cout<<"\n The coresponding Cipher text is "<<endl <<endl<<"\t"; int o=0; while(cipher[o]!='\0') { cout<<cipher[o]; o++; } endl; getch(); } Output:
Tuesday, August 16, 2011