#include <stdio.h>

void printBytes(unsigned char *ptr, int len);

int main(void){
    int x = 0xF2A913EF;   
    short y = 0x1234; //2 bytes
   
    printf("%x %hx\n",x,y);
   
    unsigned char * ptr; 
    ptr = (unsigned char *)&x;
    printf("%x\n",*ptr);
     
    printBytes(ptr,4); //print 4 bytes
    ptr = (unsigned char *)&y;
    printBytes(ptr,2);
    return 0;
}


 
void printBytes(unsigned char *ptr, int len){
    for(int i =0; i < len; i++){
        printf("%x ",*ptr);
        ptr++;
    }
    printf("\n");
}