DevC++中分数数组输入、循环终止及满分统计功能故障求助

你的程序存在两个核心问题，以下是针对性修正方案：

1. 修复getScores函数的输入终止逻辑 #

修改后的getScores存在嵌套循环错误、无返回值、终止条件无效的问题，正确逻辑应该是：逐个读取输入，遇到-1或满10个分数时停止，同时返回实际输入的分数数量。

修正后的getScores函数：

int getScores(int array[])
{   
    int index = 0;
    while (index < 10) {
        cout << "Enter a score from 0-100 (-1 to quit): ";
        cin >> array[index];
        // 输入-1则终止循环
        if (array[index] == -1) {
            break;
        }
        index++;
    }
    // 返回实际输入的有效分数数量（不包含-1）
    return index;
}

2. 修复countPerfect函数的统计逻辑 #

原函数存在两个致命错误：判断条件错误（把数组下标index和100比较）、错误覆盖计数变量perfect。正确逻辑是遍历数组元素，统计等于100的元素个数。

修正后的countPerfect函数：

int countPerfect(int array[], int numScores)
{
    int perfect = 0;
    for(int index = 0; index < numScores; index++)
    {
        // 判断当前元素是否为满分100
        if(array[index] == 100)
            perfect++;
    }
    return perfect;
}

完整修正后的程序代码 #

#include <iostream>
using namespace std;

// Function prototypes
int getScores(int[]);
int countPerfect(int[], int);

int main()
{
    const int size = 10;
    int array[size];
    int numScores;
        
    // Explain program to user
    cout << "This program will allow you to enter up to 10 scores. " << endl
         << "Then, it will report how many perfect scores were entered." << endl;
    
    // Call a function to input the scores into array
    numScores = getScores(array);
    
    // Report results
    cout << "The " << numScores << " scores you entered include "
         << countPerfect(array, numScores) << " perfect scores.\n";
    
    return 0;
}

// getScores will retrieve up to 10 scores from user
int getScores(int array[])
{   
    int index = 0;
    while (index < 10) {
        cout << "Enter a score from 0-100 (-1 to quit): ";
        cin >> array[index];
        if (array[index] == -1) {
            break;
        }
        index++;
    }
    return index;
}

// countPerfect accepts array, then counts and returns the number of perfect scores (equal to 100)
int countPerfect(int array[], int numScores)
{
    int perfect = 0;
    for(int index = 0; index < numScores; index++)
    {
        if(array[index] == 100)
            perfect++;
    }
    return perfect;
}

内容的提问来源于stack exchange，提问作者user24020519