我正在为一个赋值编写代码,它希望我编写一个程序,要求用户输入他们想要输入的整数的数量,然后它接受每一个输入,同时测试这个值是最大值还是最小值。我的程序对除1以外的每个整数都运行得很好。当我输入int1时,即使输入的数字在技术上也是最小值,也只记录最大值,这是因为if语句导致循环在找到数字是max还是min时重复,在这种情况下,数字将始终是最大值,因此测试永远不会再次运行。我怎么才能解决这个问题呢?
#include <iostream>
using namespace std;
int main()
{
    int input;
    int tmp;
    int counter = 1;
    int max_num=0;
    int min_num;
    //prompt user for integer amount
    cout << "How many integers would you like to enter? " << endl;
    cin >> input;
    cout<< "Please enter " << input << " integers." << endl;
    tmp = input;
//loop for requested amount with a test for each input
    while (counter <= tmp){
        cin >> input;
//if smaller than previous number it is the minimum
        if (input < min_num){
            min_num = input;
            counter++;
        }
// if larger than previous number it becomes max number
        else if (input > max_num){
            max_num = input;
            counter++;
        }
//continue loop if number isn't bigger than max or smaller than min
        else {
           counter++;
        }
    }
//display the max and min
    cout << "min: "<< min_num << endl;
    cout << "max: " << max_num<< endl;;
    return 0;
}发布于 2017-01-19 13:50:30
因为min_num是一个全局变量,所以这个问题是由于int min_num的默认值为0而出现的。将这几行代码添加到while循环之前,它就会工作得很好。
if(input >= 1)
    cin >> min_num;
tmp = input-1;
if((input==1)&&(min_num > max_num)){
    max_num = min_num;
    min_num = 0;
}如果只添加了一个整数,则结果相反。所以我们需要一个错误检查。顺便说一句,代码并不好。
https://stackoverflow.com/questions/41734407
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