Thread: File Input and mutator/accessor function help

Code:

#include <iostream.h>
#include <fstream.h>
#include <conio.h>
using namespace std;



class Student
{
private:
int hw_scores[10];
int total_percent;
char letter_grade;
public:
// Accessors
int get_max_hw_score();
int get_min_hw_score();
void get_hw_scores(int hw[10]);
int get_total_percent();
char get_letter_grade();
// Mutators
void set_hw_scores (int hw[10]);
// Constructor
Student ();
};

//*************************************************************

void main()
{
        ifstream inFile;
        int my_scores[10];
        Student student1;
        // INSERT FILE INPUT DETAILS HERE
        inFile.open("my_scores.txt");
        if(!inFile)
        {
                cout<<"ERROR!";
        }
        // Read in test scores.
        for (int x=0;x<10;x++)
        {
                inFile >> my_scores[x];
        }
        student1.set_hw_scores(my_scores);
        // INSERT SCREEN OUTPUT STATEMENTS HERE
        cout<<"Your letter grade thus far is a(n): "<<student1.get_letter_grade();
        cout<<"\n\nPercentage: "<<student1.get_total_percent();
        cout<<"\n\nYour highest grade was a: "<<student1.get_max_hw_score();
        cout<<"\n\nYour lowest grade was a:  "<<student1.get_min_hw_score();

        in_file.close();

        getch();

}

//***********************************************************

int Student::get_max_hw_score()
{
        int max=hw_scores[0];

        for (int y=1; y<10; y++)
        {
                if (hw_scores[y] > max)
                max = hw_scores[y];
        }
        return max;
}

//------------

int Student::get_min_hw_score()
{
        int min=hw_scores[0];

        for (int x=1; x<10; x++)
        {
                if (hw_scores[x] < min)
                min = hw_scores[x];
        }
        return min;
}

//------------

void Student::get_hw_scores(int hw[10])
{
        for (int g=0;g<10;g++)
        {
                hw_scores[g] = hw[g];
        }

}

//------------

int Student::get_total_percent()
{

        int sum=0;

        for (int q=1; q<10; q++)
        {
                sum = sum + hw_scores[q];
        }

        total_percent=sum/10;

        if (total_percent>=90)
        {
                letter_grade='A';
        }
                else if (total_percent>=80)
                {
                        letter_grade='B';
                }
                else if (total_percent>=70)
                {
                        letter_grade='C';
                }
                else if (total_percent>=60)
                {
                        letter_grade='D';
                }
                else if (total_percent<60)
                {
                        letter_grade='F';
                }

        return total_percent;
}

//------------

char Student::get_letter_grade()
{
        return letter_grade;
}

//------------

void Student::set_hw_scores(int hw[10])
{
        for (int h=0;h<10;h++)
        {
                hw[h] = hw_scores[h];
        }

}

//------------

Student::Student()
{
        for (int b=0;b<10;b++)
        {
                hw_scores[b] = 0 ;
        }

}

When I run the program, all my integers=0 and my char = nothing...

Any suggestions would be greatly appreciated! Thanks!

hw[h] = hw_scores[h];

should be the other way around

first of all, you aren't calling get_total_percent(), you could call this in the get_letter_grade function and return the value it gives you. Also, your for statement is off.

Code:

char Student::get_letter_grade()
{
        get_total_percent();
        return letter_grade;
}

and the for statement needs to be:

Code:

for (int q=0; q<10; q++)
{
        sum = sum + hw_scores[q];
}

you did one thing I told ya to do, the for loop. Now do the other thing.