Question

In Programming Exercise 13 (Chapter 8), you are asked to write a program to calculate students’ average test scores and their grades. Improve this programming exercise by adding a function to sort students’ names so that students’ data is output into ascending order according to their name.

*Need the answer in C++*

Answer 1

#include<iostream>
using namespace std;

struct student{
    string name;
    char grade;
  
};

bool studSort(student a, student b){
    return a.name<b.name;
}

int main()
{
    int n,x;
    cout<<"Enter number of students: ";
    cin>>n;
    cout<<"Enter number of subjects: ";
    cin>>x;
    struct student s[n];
  
    for(int j=0;j<n;j++){
        cout<<"Enter name of student "<<j+1<<": ";
        cin>>s[j].name;
        int mark[x], i;
        float sum=0,avg;

        cout<<"\nEnter Marks in "<<x<<" subjects :: \n";
        for(i=0; i<x; i++)
        {
            cout<<"\nEnter Marks["<<i+1<<"] :: ";
                cin>>mark[i];
                sum=sum+mark[i];
        }

        avg=sum/x;

        if(avg>80)
        {
            s[j].grade = 'A';
        }
        else if(avg>60 && avg<=80)
        {
                s[j].grade = 'B';
        }
        else if(avg>40 && avg<=60)
        {
                s[j].grade = 'C';
        }
        else
        {
                s[j].grade = 'D';
        }
    }
    sort(s,s+n,studSort);
    for(int i=0;i<n;i++){
        cout<<"Name: "<<s[i].name<<"; Grade: "<<s[i].grade<<endl;
    }
        return 0;
}

Please refer to the screenshot of the code to understand the indentation of the code

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