Code:
#include <stdio.h>
#include <dos.h>
#include <math.h>
#include "bcio2.h"
#include <string.h>
#include <stdlib.h>
#include <conio.h>
#include <ctype.h>
char alpha[] ={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',' ',};
char cipher[] ={'c','i','p','h','e','r','z','y','x','w','v','u','t','s','q','o','n','m','l','k','j','g','f','d','b','a',' ',};
char message[]={'t','h','i','s',' ','i','s',' ','a',' ','m','e','s','s','a','g','e'};
int a;
int b = strlen(alpha);
int x;
int y = strlen(message);
main()
{
printf("%s\n", message);
printf("%s\n", alpha);
printf("%s\n", cipher);
for(x=0;x<y;x++){
for(a=0;a<b;a++){
if(message[x]==alpha[a] && message[x]!=NULL)
message[x]=cipher[a];
printf("message %c is alpha %c so message %c is now cipher %c\n", message[x],alpha[a],message[x],cipher[a]);
}
}
// printf("%d", x);
// printf("%d", a);
return 0;
}