如何将分数添加到它们对应的名称

Question

我正在编写一个代码，它使用函数（而不是数组）来创建一个美国偶像风格投票系统的程序。我没有使用数组，因为我确实需要先掌握函数。

每位参赛者有 5 票，将最高和最低的票数去掉，最后 3 票平均得到答案，谁的平均票数最高者获胜。但是，参赛者的数量取决于用户输入（可能有无限数量的参赛者）

我不知道如何获得每个学生的平均值，只是作为一个整体，到目前为止，我的程序只将最后输入的值作为获胜者。这是我的代码。

如果对如何获得不同参赛者的不同平均值有任何帮助，请告诉我，我是函数新手，对 c++ 还很陌生

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

void validCheck();
void calcAvgCheck();
void findHigh();
void findLow();

ofstream outputFile;
ofstream inputFile;
double totalScore, average, score;
string name;

int main(){
    int judge = 1;
    outputFile.open("contestant.txt");
    while (name != "done" || name != "Done"){
        cout << "Enter Contestant Name, if no more, type 'done': ";
        cin >> name;

        outputFile << name << " ";

        if (name == "done" || name == "Done"){ break; }
        for (judge = 1; judge < 6; judge++){
            cout << "Enter score " << judge << " ";
            validCheck();
            outputFile << " " << score << " ";
            calcAvgCheck();
        }
    }

    cout << "Winner is: " << name << "with a score of: " << average;
    system("pause");
    return 0;
}

void validCheck(){
    cin >> score;
    if (score < 1 || score > 10){
        cout << "Please Enter a score between 1 and 10: ";
        cin >> score;
    }
    totalScore += score;
}

void calcAvgCheck(){
    inputFile.open("contestant.txt");

    average = totalScore / 5;
}

Answer 1

函数 calcAvgCheck(); 应该在 for 循环之外调用。

您可以将分数保存在向量中，并且可以重复用于计算平均值，如下所示。

请注意，定义全局值不是一个好习惯。我知道还有更多的工作要做，这应该是你的功课。请从这里开始，如果您有更多问题，请发布一个不同的问题作为此问题的继续。

#include <iostream>
#include <string>
#include<vector>


using namespace std;

void validCheck();
double calcAvgCheck(std::vector<int>& scores);
void findHigh();
void findLow();


double totalScore, score;
string name;

int main(){
    int judge = 1;
    vector<int> scores;
    double  average =0.0;

    while (name != "done" || name != "Done"){
        cout << "Enter Contestant Name, if no more, type 'done': ";
        cin >> name;

        if (name == "done" || name == "Done"){ break; }
        for (judge = 1; judge < 6; judge++){
            cout << "Enter score " << judge << " ";
            validCheck();
            scores.push_back(score);
        }
        average =calcAvgCheck(scores);
        std::cout<< " average:"<< average<<"\n";
    }

    cout << "Winner is: " << name << "with a score of: " << average;
    system("pause");
    return 0;
}

void validCheck(){
    cin >> score;
    if (score < 1 || score > 10){
        cout << "Please Enter a score between 1 and 10: ";
        cin >> score;
    }
    totalScore += score;
}
double  calcAvgCheck( std::vector<int>& scores)
 {
        int sum=0;
        for(auto &x : scores)
           sum+=x;
        return sum/scores.size();
 }