#include<stdio.h>

typedef unsigned char *byte_pointer;

void show_bytes(byte_pointer start, int len){
    for(int i = 0; i < len; ++i){
        printf("%.2x", start[i]);
    }
    printf("\n");
}

void show_int(int x){
    show_bytes((byte_pointer) &x, sizeof(int));
}

void show_float(float x){
    show_bytes((byte_pointer) &x, sizeof(float));
}

void show_pointer(void *x){
    show_bytes((byte_pointer) &x, sizeof(void*));
}

void test_show_bytes(int val){
    int ival = val;
    float fval = val;
    int* pval = &ival;

    show_int(ival);
    show_float(fval);
    show_pointer(pval);
}

int main(){
    int test_num = 1024;
    test_show_bytes(test_num);
    return 0;
}