函数模板与普通函数都存在,强制选择函数模板

/泛型编程(函数模板)
//函数模板与普通函数都识别,强制使用函数模板
#include<iostream>
using namespace std;
//函数模板:(编译两次)
template<typename T>
void swapAll(T& a, T& b)
{
	T tem = a;
	a = b;
	b = tem;
	cout << "函数模板" << endl;

}
//普通函数:(编译一次)
void swapAll(int& a, int& b)
{
	int tem = a;
	a = b;
	b = tem;
	cout << "普通函数" << endl;
}
int main()
{
	int a = 1;
	int b = 2;
	swapAll<>(a, b);
	cout << a << ' ' << b << endl;
	swapAll<int>(a, b);
	cout << a << ' ' << b << endl;
	return 0;
}