Thread: Encryption using bitwise operator in C

How to check that my encryption is successful.

Code:

#include<stdio.h>
#include<conio.h> 


main()
{
    FILE *fp, *ft;
    char ch;
    fp = fopen("Encrypt.txt","r");
    ft = fopen("Encrypt1.txt","w");
    if (fp == NULL)
    printf("File can't be opened\n");
    if (ft == NULL)
    printf("File can't be opened\n");


    while((ch = getc(fp)) != EOF)
    {
        putc(~ch , ft);
    //    printf("%c", ch);
    //    system("pause");
    }
    while((ch = getc(ft)) != EOF)
    {
        printf("%c", ch);
    }
    system("pause");
    fclose(fp);
    fclose(ft);
    
    
}