C program to find the size of union without using sizeof operator.

source code:


#include<stdio.h>

union student
{
    int roll;
    char name[100];
    float marks;
};

int main()
{
  union student *ptr = 0;
  ptr++;
  printf("Size of the union student:  %d",ptr);
.  getch();
  return 0;
}

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