input.cc

资深C++讲师授课代码

#include <iostream>
using namespace std;

int input()
{
	cout << "input an integer: ";
	int n;
	cin >> n;
	return n;
}
void input(int* p)
{
	cout << "input an integer: ";
	cin >> *p;
}
void input(int& n)
{
	cout << "input an integer: ";
	cin >> n;
}
int main()
{
	int m;
	m = input();
	cout << "m=" << m << endl;
	input(&m);
	cout << "m=" << m << endl;
	input(m);
	cout << "m=" << m << endl;
}