Answer to Question #181185 in C++ for luna

Question

Write a program to calculate students’ average test scores and their grades.

You may assume the following input data:

Johnson 85 83 77 91 76

Aniston 80 90 95 93 48

Cooper 78 81 11 90 73

Gupta 92 83 30 69 87

Blair 23 45 96 38 59

Clark 60 85 45 39 67

Kennedy 77 31 52 74 83

Bronson 93 94 89 77 97

Sunny 79 85 28 93 82

Smith 85 72 49 75 63

Use three arrays: a one-dimensional array to store the students’ names, a (parallel) two-dimensional array to store the test scores, and a parallel one dimensional array to store grades. Your program must contain at least the following functions: a function to read and store data into two arrays, a function to calculate the average test score and grade, and a function to output the results. Have your program also output the class average.

Answer 1

#include <iostream>
#include<string>


using namespace std;


double getAvg(int number, int score[][5])
{
    double sum_score = 0;
    for (int i = 0; i < 5; i++)
    {
        sum_score += score[number][i];
    }
    return sum_score / 5;
}


void setGlade(int number ,int score [][5],string *glade) 
{
    double avg_score;
    avg_score = getAvg(number, score);
    if (avg_score >= 90 && avg_score <= 100) 
    {
        glade[number] = "A";
    }
    else if (avg_score >= 80 && avg_score <= 89) 
    {
        glade[number] = "B";


    }
    else if (avg_score >= 70 && avg_score <= 79)
    {
        glade[number] = "C";


    }
    else if (avg_score >= 60 && avg_score <= 69)
    {
        glade[number] = "D";


    }
    else if (avg_score  < 60)
    {
        glade[number] = "F";


    }
}
string getGlade(int number, int score[][5], string* glade)
{
  setGlade( number,  score, glade);
  return glade[number];
}
void setScore(int number, int score[][5])
{
    for (int i = 0; i < 5; i++)
    {
        cin >> score[number][i];
    }
}
void setName(int number, string* name) 
{
    cin>> name[number];
}
string getName(int number, string* name)
{
    return name[number];
}
void Display(int number, int score[][5], string* glade,string *name) 
{
    cout << "Name:" << getName(number, name)<<endl;
    cout << "Test score: ";
    for (int i = 0; i < 5; i++) 
    {
        cout << score[number][i] << " ";
    }
    cout << endl;
    cout << "Glade " << getGlade(number, score, glade) << endl;
    cout << "Avg score " << getAvg(number, score);
}




int main()
{
    
    string names[10];
    int test_score[10][5];
    string test_glade[10];
    // enter all student example
    for (int i = 0; i < 10; i++) 
    {
        cout << "Enter name " << i + 1 << " student: ";
        setName(i, names);
        cout << "Enter test score: ";
        setScore(i, test_score);
        
    }
    // view all student info 
    for (int i = 0; i < 10; i++)
    {
        Display(i, test_score, test_glade, names);
    }
    //  output the class average
    float all_avg=0;
    for (int i = 0; i < 10; i++) 
    {
        all_avg += getAvg(i, test_score);
    }
    all_avg /= 10;
    cout <<"The class average." << all_avg << endl;
    return 0;
}