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D) Alias Programming

#include <iostream>

using namespace std;

// type alias

using DWORD=int;

using FP=void(*)(int);

// template alias

template <typename T>

class Point{

T x, y;

};

template <typename T>

using PT=Point<T>;

// template 인자 고정

template <typename T, typename U>

using Duo=pair<T, U>;

template <typename T>

using I_Duo=pair<int, T>;

// 복잡한 문법 단순화

template <typename T>

using remove_pointer_t=typename remove_pointer<T>::type;

int main(void){

DWORD n; // int n;

FP p; // void (*p)(int);

Point<int> p1;

PT<int> p2;

I_Duo<int> p3;

p3.first=10;

p3.second=10;

cout<<p3.first<<" "<<p3.second<<endl;

return 0;

}