Function for finding highest/lowest value in an array

int highGrade(int h[], int const size) 
{	 	 	
         int max = 0; 		
         h = 0; 	  	

        for(int i = 0; i < size; ++i) 	
       { 	 	
        if(h[i] > max) 		
        max = h[i]; 		 	
      } 	
 	
     return max; 
}

int main ()
{

	ifstream myfile("a5.txt");
	
	string classGrades;
	int length, i, highest;
	float average;
	int* grades;
	
	
	
	
	if (myfile.is_open())
	{
	
			myfile.seekg (0, ios::end);
			length = myfile.tellg();
			myfile.seekg (0, ios::beg);
			grades = new int [length];
				
		myfile>>classGrades;
		
		while (!myfile.eof()) 
		{
			grades[i] = atoi (classGrades.c_str());
			average = Avg(grades[i]);
			highest = highGrade(grades[i]);
			i++;
			
			
			
			
			myfile>>classGrades;
						

		}
					cout<<highest<<endl;
					cout<<fixed<<setprecision(2)<<average<<endl;
					cout<<grades[1]<<endl;
		myfile.close();
		
	}
	
	else
	
		cout<<"Error: File 'a5.txt' Not Found."<<endl;
	
	

	return 0;
}

Original - cpp Code #include <iostream> #include <iomanip> #include <fstream> #include <string> #include <vector> #include <algorithm> // max_element #include <numeric> // accumulate (aka sum) using namespace std; int main () { ifstream myfile("a5.txt"); vector<int> grades; if (myfile.is_open()) { // Not changing the input method (read to string, atoi) because there is some input // it can accept (it will discard trailing letters, give 0 for words that start with letters) // that the usual method would not. string classGrades; myfile>>classGrades; while (myfile) // see http://www.cppreference.com/wiki/io/eof { grades.push_back(atoi (classGrades.c_str())); myfile>>classGrades; } cout<< *max_element(grades.begin(),grades.end()) <<endl; // returns iterator, prefix * to get the value itself float avg = accumulate(grades.begin(), grades.end(),0); avg /= grades.size(); cout<<fixed<<setprecision(2)<<avg<<endl; //cout<<grades[1]<<endl; // what was this line meant to do again? myfile.close(); } else cout<<"Error: File 'a5.txt' Not Found."<<endl; return 0; }

#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
#include <vector>
#include <algorithm>  // max_element
#include <numeric> // accumulate (aka sum)
 
using namespace std;
 
int main ()
{
    ifstream myfile("a5.txt");
    vector<int> grades;
 
    if (myfile.is_open())
    {
        // Not changing the input method (read to string, atoi) because there is some input 
        // it can accept (it will discard trailing letters, give 0 for words that start with letters)
        // that the usual method would not.
        string classGrades;
        myfile>>classGrades;
        while (myfile) // see http://www.cppreference.com/wiki/io/eof
        {
            grades.push_back(atoi (classGrades.c_str()));
            myfile>>classGrades;
        }
        cout<< *max_element(grades.begin(),grades.end()) <<endl; // returns iterator, prefix * to get the value itself
        float avg = accumulate(grades.begin(), grades.end(),0);
        avg /= grades.size();
        cout<<fixed<<setprecision(2)<<avg<<endl;
        //cout<<grades[1]<<endl; // what was this line meant to do again?
        myfile.close();
    }
    else
        cout<<"Error: File 'a5.txt' Not Found."<<endl;
    return 0;
} 

//cout<<grades[1]<<endl; // what was this line meant to do again?