c++ - 计算平均值最大值和最小值 C++

Question

// Input : Student name, 1 test grade perstudent
// Output: Student Averages, Class Averages, Top Student Last Student

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

float CalcAvgClassGrade(int s1, int s2, int s3, int s4, int s5)

{
    float avg, sum;

    // Sum grades, and get avg
    sum = s1 + s2 + s3 + s4 + s5;
    avg = sum / 2;
    return avg;
}

string  getMax(int s1, int s2, int s3, int s4, int s5, string n1, string  n2, string n3, string n4, string n5)
{
    float max;
    string maxName;
    // Compares each grade to find the max
    max = s1;
    maxName = n1;
    if (max <  s2)
    {
        max = s2;
        maxName = n2;
    }
    if (max <  s3)
    {
        max = s3;
        maxName = n3;
    }
    if (max <  s4)
    {
        max = s4;
        maxName = n4;
    }
    if (max <  s5)
    {
        max = s5;
        maxName = n5;
    }


    return maxName;

}

string getMin(int s1, int s2, int s3, int s4, int s5, string n1, string n2, string n3, string n4, string n5) 
{

    float min;
    string minName;
    // Compares each grade to find the min
    min = s1;
    minName = n1;
    if (min <  s2)
    {
        min = s2;
        minName = n2;
    }
    if (min < s3)
    {
        min = s3;
        minName = n3; 
    }
    if (min <   s4);
    { 
        min = s4;
        minName = n4;
    }
    if (min <  s5)
    {
        min = s5;
        minName = n5;
    }
    return minName;

}



int main()
{
    string student1, student2, student3, student4, student5;
    int student1Grade, student2Grade, student3Grade, student4Grade, student5Grade;

    // Enter Student Names;
    cout << "Enter Student Name: ";
    cin >> student1;
    cout << "Enter Student Grade: ";
    cin >> student1Grade;

    cout << "Enter Student Name: ";
    cin >> student2;
    cout << "Enter Student Grade: ";
    cin >> student2Grade;

    cout << "Enter Student Name: ";
    cin >> student3;
    cout << "Enter Student Grade: ";
    cin >> student3Grade;

    cout << "Enter Student Name: ";
    cin >> student4;
    cout << "Enter Student Grade: ";
    cin >> student4Grade;


    cout <<"Enter Student Name : " ;
    cin >> student5;
    cout <<"Enter Student Grade : " ; 
    cin >> student5Grade;
         // Class AVG 
    float classAvg = CalcAvgClassGrade(student1Grade, student2Grade, student3Grade, student4Grade, student5Grade);

    cout << "Class average = " << classAvg; 

        // MAX GRADE 

    string classMax = getMax(student1Grade, student2Grade, student3Grade, student4Grade, student5Grade, student1, student2, student3, student4, student5); 

    cout << classMax << " has the highest grade in the class"; 

        // Min Grade 

    string classMin = getMin(student1Grade, student2Grade, student3Grade, student4Grade, student5Grade, student1, student2, student3, student4, student5); 
    cout << classMin << " has the lowest grade in the class"; 

}

这是我的第一个c++程序。我在格式化 cout 语句时遇到问题，而且我认为我的数学有一些错误，因为我不断得到像 2.56 x e 这样的值。任何建议表示赞赏，到目前为止我已经学到了很多关于语法的知识。我认为我的 cout 语句语法不正确。我需要使用 endl 吗？

Answer 1

if (min < s2)而其他情况是错误的。它们应该是 if (min > s2)

avg = sum / 2是错的。应该是avg = sum / 5

还有<< std::endl;或 << "\n";在你最后一次 cout 结束时语句生成一个新行。