C++ program write and display to file

Hi, I have never used a forum like this before but I am stuck! I have to write a C++ program that allows the user to enter up to 20 students info. It must include Nem, Exam 1 grade, exam 2 grade, Homework average, final exam average. For each student, the program should first calculate a final grade using the formula:
Final grade = 0.20 * exam 1 grade + 0.20 * exam 2 grade + 0.35 * Home work avearge + 0.25 * final exam grade and then assign a letter grde - All information should then be displayed and written to a file - I have been having a real tough time with programming for some reason - Everyone in my class just seems to get itand I am really struggling - Well anyway this is what I have so far and If anyone knows of soem good resources to help me learn this class better other than the text book I would appreictae the information! Thanks

#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
#include <iomanip>
#include <cmath>
#include <TCHAR.H>
#include <vector>
#include <algorithm>
using namespace std;
 
class Grade
{
private:
    string name;
    int exam1, exam2, homework, finalExam;
 
public:
    Grade(){setGrade("Tom", 94, 92, 87 ,85);};
    Grade(string name, int ex1, int ex2, int hw, int final){setGrade(name, ex1, ex2, hw,final);}
    void setGrade(string nm, int ex1, int ex2, int hw, int final){name=nm; exam1=ex1; exam2=ex2; homework=hw; finalExam=final;};
    string getName(){return name;};
    int getExam1(){return exam1;};
    int getExam2(){return exam2;};
    int getHomework(){return homework;};
    int getFinalExam(){return finalExam;};
};
 
int _tmain(int argc, _TCHAR* argv[])
{
    const int Grades = 5;
    string filename = "grades.dat";
    string name;
    ofstream outFile;
    int i, exam1, exam2, homework, finalExam;
    Grade g;
    vector<Grade> gTable;
 
    outFile.open(filename.c_str());
    if(outFile.fail())
    {
        cout << "The file was not successfully opened."<<endl;
        exit(1);
    }
 
    outFile << setiosflags(ios::fixed)
            << setiosflags(ios::showpoint)
            << setprecision(2);
 
    for(i=0; i<Grades; i++)
    {
        cout <<"\nEnter students name, 1st exam grade, 2nd exam grade, homework average, and final exam grade (type done to exit): \n";
        cin >> name>>exam1>>exam2>>homework>>finalExam;
        if(name=="exit")
            break;


        cout <<"\nFor the students the following data has been written to the file: \n";
        cout <<name<<" "<<exam1<<" "<<exam2<<" "<<homework<<" "<<finalExam<<endl;
 
        g=Grade(name, exam1, exam2, homework, finalExam);
        gTable.push_back(g);
    }
 
    for(i=0; i<gTable.size(); i++)
    {
        outFile <<gTable[i].getName()<<" "
                <<gTable[i].getExam1()<<" "
                <<gTable[i].getExam2()<<" "
                <<gTable[i].getHomework()<<" "
                <<gTable[i].getFinalExam()<<endl;
    }
    outFile.close();
    cout << "The file " << filename
         << " has been successfully written." << endl;
 
    cin.ignore();cin.ignore();
 
    return 0;
}

mandsmom

Newbie Poster

5 posts since Nov 2007

Reputation Points: 10

Solved Threads: 0

C++ program write and display to file

This article has been dead for over three months