Thread: Help with finding the highest average grade

Code:

#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <string>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	const int numberOfstudents = 8;
	const int numberOfgrades = 3;
	double total;
	double average;

	string name[numberOfstudents] = {"Isabel", "Steve", "Michael",
	"James", "Jennifer", "Billy",
	"Brenda", "Jesus"};
	double grades[numberOfstudents][numberOfgrades] = {{92,95,94},
	                                                   {99,76,68},
	                                                   {89,70,85},
	                                                   {80,75,71},
	                                                   {78,77,93},
	                                                   {93,91,89},
	                                                   {82,95,71},
	                                                  {98,82,84}};


	cout << "Student Name      Grade\n";
    cout << "------------" << setw(14) << "-------\n";
	
	for (int student = 0; student < numberOfgrades; student ++)
	{
		total = 0;

	for (int col = 0; col < numberOfgrades; col++)
		total += grades[student][col];
	    average = total / numberOfgrades;
	 cout << setw(9) << left << name[student];
	 cout << fixed << showpoint << setprecision(2);
	 cout << setw(14) << right << average << endl;
	}

	double row;
	double highestAverage = 0;
	double topStudent;


        for( row = 1; row < numberOfstudents ; row++)
		{
                if(grades[row] > highestAverage)
				{
                        highestAverage = grades[row];
                        topStudent = row;
                }
        }
	{
	cout <<"\nThe student with the highest average grade is "
	<< name[topStudent] <<" and the average is " << grades[topStudent] << endl;
	}
return 0;
}

This is the code i have so far but i keep getting errors. I need help finding the highest average grade.
This is the error i get error C2108: subscript is not of integral type.
Sorry for not posting it earlier.

So you need to be searching an array of averages, not an array of grades.

Or you calculate an average from one row of the array of grades, then find the highest of those.