#include <stdio.h>
 
int main(void) {
    unsigned char bytes[4];
    int i;

    bytes[0]=0xf2;
    bytes[1]=0x1e;
    bytes[2]=0xc5;
    bytes[3]=0x91;

    for (i=0;i<4;i++) {
        printf("%x ",bytes[i]);
    }
    printf("\n");

}