#include <iostream>
#include <algorithm>
using namespace std;

struct MyStruct { 
  int a; 
  int b; 
}; 


int main() {
    MyStruct* structs = new MyStruct[100];
    MyStruct initializer = {20, 30};
    fill(structs, structs + 100, initializer);

    cout << structs[50].a << endl;
    cout << structs[50].b << endl;

    return 0;
}

struct myStruct 
{
    myStruct():a(100),b(300){}
    int a;
    int b;
};

int main()
{
    myStruct *p = new myStruct[2];

    return 0;
}