I finally figured that sub-code out(with some hints from others)..For those who do not know, this is a simple way to read an input file containing scores for 3 exams(in this case, of 6 students), and output the highest in each exam...


//Sample Program 12- A non-interactive program to calculate student grades.
//**************************************************************************************
#include<iostream>
#include<iomanip>
#include<fstream>
#include<string>
using namespace std;

const int SIZE=6;
int GetHighValue(int array[]);

int main()
{
int exam1Array[SIZE];
int exam2Array[SIZE];
int exam3Array[SIZE];
int i=0;
string name;
ifstream inFile;

inFile.open("grades.dat");
if(!inFile)
{
cout<<"Unable to open input file, program abnormally ended";
return 1;
}
for(i=0; i<SIZE; i++)
{

inFile>>name>>exam1Array[i]>>exam2Array[i]>>exam3Array[i];

}


GetHighValue(exam1Array);
cout<<"The highest for exam 1 is"<<GetHighValue(exam1Array)<<endl;
GetHighValue(exam2Array);
cout<<"The highest for exam 2 is"<<GetHighValue(exam2Array)<<endl;
GetHighValue(exam3Array);
cout<<"The highest for exam 3 is"<<GetHighValue(exam3Array)<<endl;





return 0;
}



int GetHighValue(/*in*/ int array[])
{
int highScore=0;
int i=0;

for(i=0; i<SIZE; i++)
{
if(array[i]>highScore)
highScore=array[i];
}

return highScore;
}