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语句时遇到了麻烦，我认为我的数学中存在一些错误，因为我不断得到像2.56 x e这样的值。感谢任何建议，到目前为止我已经学到了很多关于语法的知识。我不认为我的语法在cout语句中是正确的。我需要使用endl吗？

Answer 1

if (min < s2)和其他实例是错误的。它们应该是if (min > s2)

avg = sum / 2错了。应为avg = sum / 5

在上一个<< std::endl;语句的末尾也有<< "\n";或cout来生成新行。

Answer 2

你有5名学生，你必须计算5名学生的平均成绩：

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 / 5;    //math: average on 5 students
    return avg;
}

在getMin方法中，您会错误地比较成绩和min。

如果任何数字小于min，请将该数字作为新的最小值

所以在<方法

中将所有>转为getMin

Answer 3

我在这里看到一个错误：

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;

}

您必须使用：>而不是<

计算平均值最大和最小C ++

3 个答案: