#include <unistd.h>

int main(int argc, char **argv)
{
    int i;

    if (argc == 2)
    {
        i = 0;
        while (argv[1][i])
        {
            if (argv[1][i] >= 'a' && argv[1][i] <= 'z')
                argv[1][i] = ('b' - (argv[1][i] - 'y'));
            else if (argv[1][i] >= 'A' && argv[1][i] <= 'Z')
                argv[1][i] = ('B' - (argv[1][i] - 'Y'));
            write(1, &argv[1][i], 1);
            i++;            
        }
        
    }
    write(1, "\n", 1);
    return 0;
}

Embed on website

To embed this project on your website, copy the following code and paste it into your website's HTML: