Answer to Question #180621 in C++ for awais

Question

Suppose that there is only 1kb space is left on stack, but you want to input the marks for 100 students

and calculate their average. Write an efficient C++ program to complete the task.

Answer 1

#include <iostream>
using namespace std;

void inputMarks(double studentsMarks[], int studentNumber) {
    int i = 0;

    while ( i < studentNumber ) {
        cout << i + 1 << ". " << "Enter student mark: ";
        cin >> studentsMarks[i];
        i += 1;
    }
}

double CalculateAvg(double array[], int size) {
    double sum = 0;
    double avg = 0;

    for ( int i = 0; i < size; i++ ) {
        sum += array[i]; 
    }
    avg = sum / size;
    return avg;
}

int main() {
    const int studentNumber = 100;
    double *studentsMarks = new double[studentNumber];
    double avgMarks;

    inputMarks(studentsMarks, studentNumber);

    avgMarks = CalculateAvg(studentsMarks, studentNumber);

    cout << "\nThe average mark of " << studentNumber << " students is: " << avgMarks << endl;

    delete studentsMarks;

    return 0;
}