模板使用入门示例

#include <iostream>using namespace std;template <class Type>Type max(Type arr[], int len){    if(len < 1)        return -99999;    Type ret = arr[0];    for(int i = 1; i < len; ++ i)    {        if(arr[i] > ret)            ret = arr[i];    }    return ret;}int main(){    int n;    cin >> n;    double *arr = new double[n];    for(int i = 0; i < n; ++ i)        cin >> *(arr+i);    cout << max(arr, n);    return 0;}