Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- #include<stdio.h>
- int main()
- {
- int i, j, k , l;
- char a[20], c[20], d[20];
- printf("Enter the Plain Text : ");
- gets(a);
- l = strlen(a);
- for(i=0,j=0 ; i<l; i++)
- {
- if(i%2 == 0)
- {
- c[j++] = a[i];
- }
- }
- for(i=0; i<l; i++)
- {
- if(i%2 == 1)
- {
- c[j++] = a[i];
- }
- }
- c[j] = '\0';
- printf("\nCipher Text : ");
- printf("%s", c);
- if(l%2 == 0)
- {
- k = l/2;
- }
- else
- k = (l/2)+1;
- for(i=0, j=0;i<k; i++)
- {
- d[j] = c[i];
- j=j+2;
- }
- for(i=k, j=1;i<l; i++)
- {
- d[j] = c[i];
- j=j+2;
- }
- d[l]='\0';
- printf("\nMessage : ");
- printf("%s", d);
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement