GATE EXAM PREPARATION IN "C" - How will you show memory representation of C variables?

Write a C program to show memory representation of C variables like int, float, pointer, etc.

Algorithm:
Get the address and size of the variable. Typecast the address to char pointer. Now loop for size of the variable and print the value at the typecasted pointer.

Program:

#include <stdio.h> typedef unsigned char *byte_pointer;   /*show bytes takes byte pointer as an argument   and prints memory contents from byte_pointer   to byte_pointer + len */ void show_bytes(byte_pointer start, int len) {      int i;      for (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 *)); }   /* Drover program to test above functions */ int main() {     int i = 1;     float f = 1.0;     int *p = &i;     show_float(f);     show_int(i);     show_pointer(p);     show_int(i);     getchar();     return 0; }