Test example - size of structure.

main.cpp

//
//  main.cpp
//
//  Created by Yaroslav Fedorov on 12/01/16.
//  Copyright © 2016 Yaroslav Fedorov. All rights reserved.
//

#include <iostream>

struct A {
    char p_1;
    double p_2;
    short p_3;
    short p_4;
};

int main(int argc, const char * argv[])
{
    std::cout << sizeof(A) << std::endl;
}