# Overall Average Grade Solver in C++ A simple overall average grade solver that I wrote using C++ programming language. I am using codeblocks to run my program.

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Program Listing

``````#include <iostream>
#include <iomanip>
#include <cmath>
#include <string>

#define EXIT_IF(cnd, msg) if(cnd){std::cerr << msg; exit(1);}

{
return "Poor";
return "For Improvement";
return "Good";
return "Very good";
else
return "Excellent";
}

int main()
{
int num_students = 0, student, grade;
double sum , total_sum = 0.0;

std::cout << "Number of students in the class? ";
std::cin >> num_students;
std::cin.ignore(255, '\n');
EXIT_IF(num_students < 0, "Invalid Input: Please enter a nonnegative integer.");
for (student = 0; student < num_students; ++student)
{
sum = 0.0;
{
std::cout << "Grade of Student #" << student + 1 << " in Subject " << grade + 1 << ": ";
int tmp;
std::cin >> tmp;
EXIT_IF(tmp < 0, "Invalid Input: Please enter a nonnegative integer.");
sum += tmp;
}
double avg = std::round(sum / num_grades);
std::cout << "Average of Student " << student + 1 << " is : " << avg << "\n";
total_sum += avg;
}
double class_average = total_sum / num_students;
std::cout << std::fixed << std::setprecision(2) <<
"Class Average Grade is : " << class_average << "\n";
std::cout << "Class Performance is " << get_performance(class_average) << "\n";
}
``````