Example Grade program using arrays

grade5array.cpp

#include <iostream>
#include <string>

int main()
{
    std::string progName = "Grade Analysis";
    std::cout << "Welcome to the " << progName << " program\n" 
              << "How many students to be entered (max 10)? " << std::endl;
    
    int studentNum;
    float averageGrade;

    std::cin >> studentNum;

    if (studentNum > 10) {
        std::cout << "Too many students - up to 10 only allowed" << std::endl;
        exit(0);
    }

    std::string names[10]; // allows up to 10 names t be stored
    int grades[10];
    for (int i=0;i<studentNum;i++) {
        std::cout << "Enter name for student " << (i+1) << " : ";
        std::string studentName;
        std::cin >> studentName;
        names[i] = studentName;
        std::cout << "Enter " << studentName << "'s grade: ";
        int grade;
        std::cin >> grade;
        grades[i] = grade;
    }

    // calculate average

    int sum = 0;
    for (int i = 0; i < studentNum; i++) {
        sum = sum + grades[i];
    }
    float average = static_cast<float>(sum) / studentNum;

    std::cout << "Average grade is " << average << std::endl;

    std::cout << progName << " completed" << std::endl;
    exit(0);
}