#include <stdio.h>
#include <stdlib.h>
void encrypt( char * dst, const char * src, const char * key) {
for (int i =0; src[i] != '\0'; i++) {
dst[i] = src[i] != 32 ? key[ src[i] < 97 ? (src[i] - 65): (src[i] - 97) ]:32;
}
}
int main( void ) {
char key[] = "YTNSHKVEFXRBAUQZCLWDMIPGJO";
char plain[100] = {};
char cipher[100] = {};
gets(plain);
encrypt(cipher, plain, key);
printf("plain text: %s\n", plain);
printf("cipher text: %s\n", cipher);
return 0;
}