c++ - 计数器的问题

Question

我是 C++ 的新手，有一项任务是编辑此代码以使其正常工作。出于某种原因，当我使用多个正数或负数的组合时，它给出的答案是我输入了多个数字一个额外的数字。

例子:

我输入了 3 个正数和 1 个负数。计数器显示 4 个正数和 1 个负数。如果我从负数而不是正数开始，也会发生同样的事情。

如有任何帮助，我们将不胜感激。这是代码:

#include <iostream>
using namespace std;

int main()
{
    int number   = 0;
    int positive = 0;   //counter
    int negative = 0;   //counter
    int totalPositive = 0;
    int totalNegative = 0;

    //get a number
    cout << "Enter a positive or negative integer (enter 0 to end): ";
    cin >> number;

    while (number != 0)
    {
        //update counters
        if (number > 0)
        {   
            positive =+ 1;
        }   
        else 
            negative =+ 1;

        //end if

        //get another number
        cout << "Enter another positive or negative integer (enter 0 to end): ";
        cin >> number;
        totalPositive += positive;
        totalNegative += negative;
    }//end while

    //display counters
    cout << endl;
    cout << "Total positive numbers: " << totalPositive << endl;
    cout << "Total negative numbers: " << totalNegative << endl;

    system("pause");
    return 0;
}   //end of main function

Answer 1

试试这段代码:

#include <iostream>
#include <stdlib.h>
using namespace std;

int main()
{
    int number;
    int positive = 0;
    int negative = 0;

   do{

        cout << "Enter a positive or negative integer (enter 0 to end): ";
        cin >> number;

        if (number > 0)
           positive += 1;

        else if(number<0)
           negative += 1;


    }while(number!=0);
    //end while

    //display counters
    cout << endl;
    cout << "Total positive numbers: " << positive << endl;
    cout << "Total negative numbers: " << negative << endl;

    system("pause");
    return 0;
}   //end of main function

你不必使用total positive和total negative，除非你想要正数和负数的总和。