Input

Input String

Select Key

Only alphabetical string is acceptable.
String length can range from 1 to 10.

Decrypt

Input Encrypted String

Select Key

118	ASCII value of Character

#include<stdio.h>

#include<string.h>

char output_str[20];

char *enc_dec(char *text,char key);

void main(){

char input_str[20],*enc_str,*dec_str,enc_key;

printf("\nEnter String\n");

gets(input_str);

printf("\nEnter Encryption Key\n");

scanf("%c",&enc_key);

getchar();

enc_str=enc_dec(input_str,enc_key);

printf("\n%s\n",enc_str);

printf("\nEnter String\n");

gets(input_str);

printf("\nEnter Decryption Key\n");

scanf("%c",&enc_key);

dec_str=enc_dec(input_str,enc_key);

printf("\n%s\n",dec_str);

}

char *enc_dec(char *text,char key){

int i;

for (i = 0; i < strlen(text); i++)

output_str[i]=text[i]^key;

return (char *)output_str;

}