#include <unistd.h>

int main(void)
{
    char c;
    char c16[2];
    c16[1] = 0;
    while (read(0, &c, 1)){
        c16[0] = c;
        write(1, &c16, 2);
    }
    c16[0] = 0;
    write(1, &c16, 2);
    return 0;
}