/*
How to avoid the structure padding in C?

The structural padding is an in-built process that is automatically done by the 
compiler. Sometimes it required to avoid the structure padding in C as it makes the
size of the structure greater than the size of the structure members.

We can avoid the structure padding in C in two ways:

Using #pragma pack(1) directive
Using attribute

*/

#include <stdio.h>  
#pragma pack(1) 

struct base  
{  
    int a;  
    char b;  
    double c;  
};

int main()  
{  
    struct base var; // variable declaration of type base  
    // Displaying the size of the structure base  
    printf("The size of the var is : %zu", sizeof(var));  
    return 0;  
}

#include <stdio.h>  
  
struct base  
{  
    int a;  
    char b;  
    double c;  
}__attribute__((packed));

int main()  
{  
  struct base var; // variable declaration of type base  
  // Displaying the size of the structure base  
  printf("The size of the var is : %d", sizeof(var));  
  
    return 0;  
}