Grade entry and calculator

[lolzgeorge]

Hey guys, this should be a simple program, but I'm having issues. The problem is as follows:


Write a program to complete the following tasks and record the outputs to a data file named “EGR126-Final.dat”. All the list should includes header, student ID, name and grade.

1. Read the class roster from “ClassRoster.dat” (posted on Blackboard in Course Documents). (5 points)

2. Write a module to generate random grade for each student. Print the class roster (with students’ grades) to the data file. (10 points)

• Failing rate is 20%.
• Passing grade is between 60 and 100.
• Failing grade is between 0 and 59.99.
• srand() should be used.


3. Using module to determine the average grade of the class and list the students with greater-than-average grades. (10 points)

4. Sort the list by student’s name and print the sorted list.

The "data file" looks like this:

    ID      NAME
    20100	Tom
    35722	Mary
    78565	David
    37421	John
    55399	Kathy
    92167	Sue
    82367	Kim
    88391	Daniel
    99383	Ray
    25796	William

And this is what I have so far, It'll compile once you take out the getline part, what I tried to do there was get the data from each column and put it into an array, I failed :(

// 11-13-10
// Assignment 4

#include <iostream>
#include <iomanip>
#include <string>
#include <fstream>
#include <cmath>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <cstdlib>
using namespace std;

double rand_float(double a, double b);

int main()
{
	unsigned int seed;
	const int NROWS=10;
	const int NCOLS=3;
	int size=0,i,grades=0,z,y,g,j,Highkids=0;
	double w=rand_float(100,0),mean;
	double grade=0;
    double power[NROWS][NCOLS],col_sum;
	string STRING,ID,NAME,id,S1,S2,S3;

    ifstream infile;
	infile.open("ClassRoster.dat");	
	while(!infile.eof)
        {
	        getline(infile,ID[10]); 
	        getline(inflie,NAME[10]);
			cout<<STRING<<setw(5)<<NAME;			
        }
	infile.close();
	
	
	ofstream EGR126Final;
	EGR126Final.open("EGR126Final.dat");
	cout.setf(ios::fixed);
	cout.setf(ios::showpoint);
	cout.precision(3);

	cout<<"Student grade generator:"<<endl<<endl;

	//Table with 2D array of values.
	
	cout<<"Enter a seed value for the grade generator: "<<endl;
	cin>>seed;
	srand(seed);

	cout<<endl;
	cout<<setw(4)<<"ID"<<setw(5)<<"NAME"<<setw(5)<<"GRADE"<<setw(5)<<"PASS/FAIL"<<endl;
	cout<<"-------------------------------------------------"<<endl;

	cout<<setw(4)<<id<<setw(5)<<name<<endl;

	for (z=0;z<NROWS;z++)
	{
		if (z<11)
		{
			cout<<endl;
			cout<<id<<'\t';
		}
		else
		{
			cout<<endl;
			cout<<id<<'\t';
		}

		 w=rand_float(0,100);
         if (w<=20)
         {
             for (k=0;k<60;k=k)
             {
                 grade=rand_float(100,0);
                 grade<<setw(4)<<setw(10)<<"Fail"<<endl; // Write data to file.
                 cout<<setw(4)<<setw(10)<<grade<<"Fail"<<endl; // Outputs the information to the screen
             }
         }
         else 
             {
             u=rand_float(100,0);
             grade<<setw(4)<<setw(10)<<endl; // Write data to file.
             cout<<setw(4)<<t<<setw(10)<<grade<<endl; // Outputs the information to the screen
             }     
  }
		
		}
	}
	cout<<endl;

	//Average power calculation & output
	col_sum=0;

	for (int j=0;j<NROWS;j++)
	{
		for (int g=0;g<NCOLS;g++)
		{
			col_sum +=power[j][g];
		}
	}
	mean=col_sum/(NCOLS*NROWS);
	cout<<endl<<"AVERAGE GRADE: "<<mean<<setw(5)<<"."<<endl<<endl;

	//Days with higher output:

	cout<<"STUDENTS WITH ABOVE-AVEARAGE GRADES: "<<endl<<endl;
	
	for (int j=0;j<NROWS;j++)
	{
		for (int k=0;k<NCOLS;k++)
		{
			if (mean<power[j][k])
			{
				Highkids++;
				cout<<left<<"ID "<<j+1<<" Name "<<k+1<<": "<<power[j][k]<<endl;
			}
		}
	}

	//Students with above-average grades.


	cout<<endl<<endl;
	
	//Number of days with higher output:
	cout<<"***There are "<<Highkids<<" total students with higher than average grades."<<endl<<endl;

	EGR126Final.close();
	system("pause");
	return 0;
}

double rand_float (double a, double b)
{
return ((double) rand() / RAND_MAX ) * (b - a) + a;
}

Any help, as always, would be immensely appreciated!