#include <stdio.h>


struct a{
    double p;   //8
    double pq;  //8 
    char c;     //1 
    char d;     //1
                //6
};              // = 24

struct b{
    char c;   //1 byte
    char p;   //1 byte
};            //= 2 bytes

struct c{
    int x;    //4 
    char c;   //1
              //3  
    double f; //8  
    char s[3];//3
              //5
              // = 24 bytes      
};

int main(void){
    printf("size of %ld\n",sizeof(struct a));
    printf("size of %ld\n",sizeof(struct b));
    printf("size of %ld\n",sizeof(struct c));

    return 0;
}