Machine Problem

Write a program that will ask the user to give a grade and then the program will compute the average grade using for loop statement in C++ programming language.

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Program Listing

/* average_grade_for_loop.cpp
   Jake Rodriguez Pomperada,MAED-IT,MIT
   Bacolod City, Negros Occidental Philippines

#include <iostream>
#include <cmath>

using namespace std;

int main()
	int NumGrades=0;
	double grades=0.00;
	double total=0.00,GradeAv=0.00;
	cout <<"\n\n";
    cout <<"\tAverage Grade Solver Using For Loop in C++";
    cout <<"\n\n";
	for (NumGrades = 0;; NumGrades++)
		cout << "\tEnter the Grade No. " << (NumGrades+1) 
		<< ".  (Press -1 To Stop ) : ";
		cin >> grades;
		total += grades;
		if (grades == -1) {
			GradeAv = ceil((total / NumGrades));
			cout << "\n\n\tThe average of Grade is " << 
		     GradeAv<< ".";		
      cout <<"\n\n";
	  cout <<"\tEnd of Program";
	  cout <<"\n";