c++——函数模板重载

#include<iostream>
using namespace std;
//函数模板的重载
template <class T>void Swap(T &a, T&b);
template <typename T> void Swap(T a[], T b[], int len);

void printArray(int arr[],int len);

int main()
{
	int m = 10, n = 90;
	Swap(m, n);
	cout << "m = "<< m << ",n = " << n << endl;

	//交换两个数组
	int a[5] = { 1, 2, 3, 4, 5 };
	int b[5] = { 10, 20, 30, 40, 50};
	int len = sizeof(a) / sizeof(int);
	Swap(a, b, len);
	cout << "数组a：" << endl;
	printArray(a,len);
	cout << "数组b：" << endl;
	printArray(b, len);
	return 0;
	
}

template <class T> void Swap(T &a,T &b)
{
	T temp = a;
	a = b;
	b = temp;
}

template<typename T> void Swap(T a[],T b[],int len)
{
	T tmp;
	for (int i = 0; i < len;i++){
		tmp = a[i];
		a[i] = b[i];
		b[i] = tmp;
	}
}

void printArray(int arr[],int len)
{
	for (int i = 0; i < len; i++){
		if (i == len-1){
			cout << arr[i] << endl;
		}
		else{
			cout << arr[i] << " ";
		}
	}
}