C++ Overloading

兩個或是多個方法且名稱一樣，帶入參數長度以及型態不能相同

#include <iostream>
using namespace std;

void f();
void f(int n1);
void f(int n1, int n2);
void f(int n1, int n2, int n3);
int f(int n1, int n2, double n3);


int main()
{
 f();
 f(1);
 f(1, 1);
 f(1, 1, 1);
 cout << f(1, 1, 1.0) << endl;

 system("pause");
 return 0;
}

void f(){ cout << 0 << endl;}
void f(int n1){ cout << n1 << endl;}
void f(int n1, int n2){ cout << n1 + n2 << endl;}
void f(int n1, int n2, int n3){ cout << n1 + n2 + n3 << endl;}
int f(int n1, int n2, double n3){ return n1 + n2 + n3 + 1; }