C++编程填空问题：反转

Question

描述

补充代码，使得程序输出为

50 4 34 21 10

7.1 8.1 9.1 10.1 11.1 4.1

#include<iostream>
using namespace std;
template<class T>
// 在此处补充你的代码
int main()
{
    int a[5] = { 10, 21, 34, 4, 50 };
    double d[6] = { 4.1, 11.1, 10.1, 9.1, 8.1, 7.1 };
    f(a, 5);
    f(d, 6);
    for (int i = 0; i < 5; i++)
    {
        cout << a[i] << " ";
    }
    cout << endl;
    for (int j = 0; j < 6; j++)
    {
        cout << d[j] << " ";
    }
    cout << endl;
    return 0;
}

样例输入

无

样例输出

50 4 34 21 10
7.1 8.1 9.1 10.1 11.1 4.1

http://cxsjsx.openjudge.cn/2018midexamcloze/5/

Answer 1

// Q759045.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"


#include<iostream>
using namespace std;
template<class T>
// 在此处补充你的代码
void f(T arr[], int n)
{
    for (int i = 0; i < n / 2; i++)
    {
        T t = arr[i];
        arr[i] = arr[n - 1 - i];
        arr[n - 1 - i] = t;
    }
}
int main()
{
    int a[5] = { 10, 21, 34, 4, 50 };
    double d[6] = { 4.1, 11.1, 10.1, 9.1, 8.1, 7.1 };
    f(a, 5);
    f(d, 6);
    for (int i = 0; i < 5; i++)
    {
        cout << a[i] << " ";
    }
    cout << endl;
    for (int j = 0; j < 6; j++)
    {
        cout << d[j] << " ";
    }
    cout << endl;
    return 0;
}