Getting a String object containing hexadecimal representation of a char

#include<stdio.h>

int main(int argc, char **argv)
{
        char x = 'A';
        char y[5] = "    ";

        y[0] = x;
        printf("value of y after copying x into it: %s\n",y);
        snprintf(y,4,"%x",x);

        printf("value of y after copying hex value of x into it: %s\n",y);
        return 1;
}