我的代碼有問題，因為我不知道為什么會收到錯誤。 這是代碼：

Question

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

void getScore(int &, int &, int &, int &,int &);
void calcAverage(double );
int findLowest(int , int , int , int , int );

int main()
{
    int num1, num2, num3, num4, num5;
    string response; 


    getScore(num1, num2, num3, num4, num5);
    calcAverage(num1, num2, num3, num4, num5);

    cout << "Are there any more test scores?" << endl;
    cin >> response;
    cout << endl;
    if (response == "yes")
    {
        getScore(num1, num2, num3, num4, num5);
        calcAverage(num1, num2, num3, num4, num5);
    }

    system("pause");
    return 0;
}
void getScore(int &num1, int &num2, int &num3, int &num4, int &num5)
{
    cout << "What was your score for the first test?" << endl;
    cin >> num1;
    cout << endl;
    if (num1 < 1 || num1 > 100)
    {
        cout<<"Scores must be between 1 and 100, re-enter the score" << endl;
        cin >> num1;
    }

    cout << "What was your score for the second test?" << endl;
    cin >> num2;
    cout << endl;
    if(num2 < 1 || num2 > 100)
    {
        cout<<"Scores must be between 1 and 100, re-enter the score" << endl;
        cin >> num1;
    }

    cout << "What was your score for the third test?" << endl;
    cin >> num3;
    cout << endl;
    if(num3 < 1 || num3 > 100)
    {
        cout<<"Scores must be between 1 and 100, re-enter the score" << endl;
        cin >> num1;
    }

    cout << "What was your score for the fourth test?" << endl;
    cin >> num4;
    cout << endl;
    if(num4 < 1 || num4 > 100)
    {
        cout<<"Scores must be between 1 and 100, re-enter the score" << endl;
        cin >> num1;
    }

    cout << "What was your score for the fifth test?" << endl;
    cin >> num5;
    cout << endl;
    if(num5 < 1 || num5 > 100)
    {
        cout<<"Scores must be between 1 and 100, re-enter the score" << endl;
        cin >> num1;
    }
}
int findLowest(int num1, int num2, int num3, int num4, int num5)
{
    int lowest;
    lowest = num1;

    if (num2 < lowest)
    {
        lowest = num2;
    }
    else if (num3 < lowest)
    {
        lowest = num3;
    }
    else if (num4 < lowest)
    {
        lowest = num4;
    }
    else if (num5 < lowest)
    {
        lowest = num5;
    }
    cout << "the lowest test score is " << lowest << endl;

    return lowest;
}
void calcAverage(int num1, int num2, int num3, int num4, int num5)
{
    int findLowest(int, int, int, int, int);
    int lowest;
    double average;

    findLowest(num1, num2, num3, num4, num5);

    cout << lowest << endl;
    average = (((float)num1 + num2 + num3 + num4 + num5) - lowest) / 4.0;
    cout << showpoint << setprecision(8) << average << endl;

}

我的錯誤顯示為：錯誤2錯誤C2660：'calcAverage'：函數未采用5個參數

它在第18和26行中顯示，但我不確定它到底有什么問題。 有人可以幫我解釋一下嗎？

Answer 1

您聲明：

void calcAverage(double );

代替 ：

void calcAverage(int num1, int num2, int num3, int num4, int num5)

您對編譯器說：“我要創建一個名稱為calcAverage的函數，該函數將帶有1個參數”，然后實現一個具有5個參數的函數calcAverage，因此他拋出錯誤。

Answer 2

void calcAverage(double );

在這里，您聲明函數calcAverage接受一個類型為double參數，然后嘗試像這樣調用它：

calcAverage(num1, num2, num3, num4, num5);

您在文件底部的函數定義像您想要的那樣采用5個整數，問題是c ++編譯器從上到下掃描文件。 這意味着，當您到達嘗試使用5個參數調用calcAverage的部分時，它僅在文件頂部看到帶有單個參數的函數聲明，甚至看不到它的定義。

要解決此問題，只需更改聲明以使用與定義相同的參數即可：

void calcAverage(double );

至：

void calcAverage(int num1, int num2, int num3, int num4, int num5);

在文件的頂部。