#include <iostream>

using namespace std;

int main()
{
	int total,							// added total of grades
		grade,							// grade entered for average
		x,								// variable = to number of grades entered
		average;						// total of the grades divided by x (defined below)

	total = 0;							// default total
	x = 0;								// default # of grades

	do
	{
		cout << "Enter grade, -1 to end: ";
		cin >> grade;

		total = total + grade;
		x = x + 1;
	}
	while ( grade != -1 );				// continue to loop while -1 is not set as input
	cin.ignore();						// ignore input

	x = x - 1;							// added code to counteract -1
	total = total + 1;					// added code to counteract -1

	if ( total > -1 )					// proceed only if total is greater than -1
	{
		average = total / x;
		cout << "You average is " << average << "." << endl;
	}
	else								// proceed to this only if "if" statement = FALSE
	{
		cout << "No grades were entered." << endl;
	}
	cin.get();							// receive input at end to keep window active after executing complete
	return 0;
}

// All grades will return integers, no decimals will be displayed, nor can you enter decimals

#include <iostream>using namespace std;int main(){	int total,							// added total of grades		grade,							// grade entered for average		x,								// variable = to number of grades entered		average;						// total of the grades divided by x (defined below)	// Initialize the local variables	total = x = 0;	do	{		cout << "Enter grade, -1 to end: ";		cin >> grade;		// if the user input was -1, do not take it into calculation.		if( grade == -1 )			break;		total += grade;		x++;	}	while ( grade != -1 );				// continue to loop while -1 is not set as input	cin.ignore(1000, '\n');						// ignore input	if ( x > 0 )					// proceed only if user has entered at least 1 input	{		average = total / x;		cout << "Your average is " << average << "." << endl;	}	else								// proceed to this only if "if" statement = FALSE	{		cout << "No grades were entered." << endl;	}	cin.get();							// receive input at end to keep window active after executing complete	return 0;}// All grades will return integers, no decimals will be displayed, nor can you enter decimals