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;

}

我的错误是：错误2错误C2660：'calcAverage'：函数不带5个参数

它显示在第18和26行，但我不确定它到底出了什么问题。愿有人帮我解释一下吗？

Answer 1

你宣布：

void calcAverage(double );

而不是：

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

你对编译器说：＆＃34;我将创建一个名为calcAverage的函数，它将采用1个参数＆＃34;然后用5参数实现一个函数calcAverage，这样就会抛出一个错误。

Answer 2

void calcAverage(double );

在这里，您声明函数calcAverage采用double类型的一个参数，但之后尝试调用它：

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

你在文件底部的函数定义是你想要的5个整数，问题是c ++编译器从上到下扫描文件。这意味着当它到达你试图用5个参数调用calcAverage的部分时，它只看到文件顶部的函数声明只有一个参数，它甚至看不到它的定义。

要修复它，只需更改声明以获取与定义相同的参数：

void calcAverage(double );

为：

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

位于文件顶部。

我的代码有问题，因为我无法弄清楚我收到错误的原因。这是代码：

2 个答案: