cpp help, not even the teacher can figure this out!

I can't figure this out, not even a cpp teacher could, here is what i want to do, the teacher portion of the program included below, (click the url link) is sopposed to get a class aveage from the tests that the program also makes and scores an accumlator and a counter in teacher.txt the program what calling it either makes up values or entirely skipps it, I don't understand! what is going on here?

please help, this is due tomarrow!

thank you so much,
Kynan Lalone

http://www.chartermi.net/~dlalone/math_quiz1.cpp

egh... localize the problem. It might just be me but I don't wanna read through all that source and your explanation wasn't full enough.

sorry

Quote:

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Originally posted by rmullen3
egh... localize the problem. It might just be me but I don't wanna read through all that source and your explanation wasn't full enough.

sorry

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it isn't just you. That is quite a bit of code to read through, and your explanation didn't explain what exactly you are having problems with. actually, it sortof confused me.

It now compiles, You need to clarify where the problems are.

Code:

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//Kynan Lalone
//Math Quiz

#include <iostream.h>
#include <ctype.h>
#include <stdlib.h>
#include <time.h>
#include <iomanip.h>
#include <fstream.h>
#include <string.h>  // I added this since you are using strcmp()

//prototypes
void rand_num(char, short &, short &, char, short &); //See WARNING below
void neg_num_check(short &, short &, short &, char);
void problem_and_answer(short &, short &, char, short &, short &);
void cAdd_sub_input();
void correct_or_not(short, short, float &, float &);
void menu2(short, char &);
void teacher();

int main ()
{
        short cGrade = 0;
        short sMin_num = 0;
        short sMax_num = 0;
        short sTemp = 0;
        char cAdd_sub = ' ';
        short sUser_Answer = 0;
        short sReal_Answer = 0;
        short r = 0;
        float fAnswers_right = (float) 0.0;
        float fAnswers_wrong = (float) 0.0;
        float fAnswers_percent = (float) 0.0;
        float fAnswers_temp = (float) 0.0;
        char fAnswers_grade = ' ';
        float f10Questions_counter = (float) 0.0;
        //input
        cout << "Grade            Number To Enter" << endl;
        cout << "-----            ---------------" << endl;
        cout << "First                  1        " << endl;
        cout << "Second                2        " << endl;
        cout << "Third                  3        " << endl;
        cout << "Fourth                4        " << endl;
        cout << "Fifth                  5        " << endl;
        cout << "Sixth                  6        " << endl;
        cout << "Teacher              999      " << endl << endl;

       
        cout  << "Enter your grade number: ";
        cin >> cGrade;
        if (cGrade == 999)
        teacher();
        else
        menu2(cGrade, cAdd_sub);
       
        //FUNction time!  - here were looping the questions and answers 10 times, all the while making new random numbers, checking for negitive numbers, giving a problem and ansewer and diplaying if its right or not.
                for (short x=0; x < 10; x = x+1)
                {
                        rand_num(cGrade, sMin_num, sMax_num, cAdd_sub, r);  //WARNING: short to char conversion
                        neg_num_check(sMin_num, sMax_num, sTemp, cAdd_sub);
                        problem_and_answer(sMin_num, sMax_num, cAdd_sub, sUser_Answer, sReal_Answer);
                        correct_or_not(sUser_Answer, sReal_Answer, fAnswers_right, fAnswers_wrong);
                        cout << endl;
                }
       
        cout << "You have compleated all 10 questions." << endl << "You got " << fAnswers_right << " questions right and " << fAnswers_wrong << " answers wrong." << endl;
        fAnswers_percent = (fAnswers_right / 10) * 100;
        cout << setprecision(2) << setiosflags(ios :: fixed | ios :: showpoint);
        cout << "You have " << fAnswers_percent << "%" << " ";
        if (fAnswers_percent <= 100 && fAnswers_percent >=90)
                fAnswers_grade = 'A';
        if (fAnswers_percent < 90 && fAnswers_percent >=80)
                fAnswers_grade = 'B';
        if (fAnswers_percent < 80 && fAnswers_percent >=70)
                fAnswers_grade = 'C';
        if (fAnswers_percent < 70 && fAnswers_percent >=60)
                fAnswers_grade = 'D';
        if (fAnswers_percent <= 60 && fAnswers_percent >=0)
                fAnswers_grade = 'F';
        cout << "That is a " << fAnswers_grade << ".";
       
        //counter used for the teacher.txt (counts how many 10 question tests were taken
        f10Questions_counter++;
        //sending the above answers correct (fAnswers_right) to a file which is used in the teacher menu in teacher()
        ofstream outFile;
        outFile.open("teacher.txt", ios::app);
        outFile << fAnswers_right<<endl;
        outFile.close();
       
        return 0;
}
void menu2(short cGrade, char & cAdd_sub)
{
        if (cGrade == 1)
                {       
                        cAdd_sub = 'A';
                }
        if (cGrade == 2)
                {
                        cAdd_sub_input();
                        cout << "Enter the problem type: ";       
                        cin >> cAdd_sub;
                }
        if (cGrade == 3)
                {
                        cAdd_sub_input();
                        cout << "Multiplication          M        " << endl;
                        cout << "Enter the problem type: ";       
                        cin >> cAdd_sub;
                }
        if (cGrade == 4)
                {
                        cAdd_sub_input();
                        cout << "Multiplication          M        " << endl;
                        cout << "Enter the problem type: ";       
                        cin >> cAdd_sub;
                }
        if (cGrade == 5)
                {
                        cAdd_sub_input();
                        cout << "Multiplication          M        " << endl;
                        cout << "Divison                D        " << endl;
                        cout << "Enter the problem type: ";       
                        cin >> cAdd_sub;
                }
        if (cGrade == 6)
                  {
                          cAdd_sub_input();
                          cout << "Multiplication          M        " << endl;
                        cout << "Divison                D        " << endl;
                        cout << "Enter the problem type: ";       
                        cin >> cAdd_sub;
                  }
 }
void correct_or_not(short sUser_Answer, short sReal_Answer, float & fAnswers_right, float & fAnswers_wrong)
{
        if (sUser_Answer == sReal_Answer)
                {
                        cout << endl << "Your answer was " << sUser_Answer << " and the correct answer was " << sReal_Answer << "." << endl;
                        cout << "Congratulations, You Are Correct!" << endl;
                        fAnswers_right = fAnswers_right + 1;
                }
                else
                {
                        cout << endl << "Your answer was " << sUser_Answer << " and the correct answer was " << sReal_Answer << "." << endl;
                        cout << "Sorry, Better Luck Next Time!" << endl;
                        fAnswers_wrong = fAnswers_wrong + 1;
                }

}
void cAdd_sub_input()
{
        cout << "Problem          Letter To Enter"<< endl;
        cout << "-----            ---------------" << endl;
        cout << "Addition                    A        " << endl;
        cout << "Subtraction                  S        " << endl;
}
void rand_num(char cGrade, short & sMin_num, short & sMax_num, char cAdd_sub, short & r)
{       
        //seed random numbers
        srand(time(NULL));
        if (toupper(cAdd_sub) == 'S' || toupper(cAdd_sub) == 'A')
        {

       
                if (cGrade == 1)
       
                {       
                        //define variables as random numbers between 1 and 10
                        sMin_num = 1 + rand() % (10 - 1 + 1);
                        sMax_num = 1 + rand() % (10 - 1 + 1);
                }
               
                else
                {
                        //define variables as random numbers between 10 and 100
                        sMin_num = 1 + rand() % (100 - 1 + 1);
                        sMax_num = 1 + rand() % (100 - 1 + 1);
                }
        }
        if (toupper(cAdd_sub) == 'M' || toupper(cAdd_sub) == 'D')
        {       
                //define variables as random numbers between 0 AND 12
                sMin_num = 1 + rand() % (12 - 1 + 1);
                sMax_num = 1 + rand() % (12 - 11 + 1);
               
                if (toupper(cAdd_sub) == 'D')
                {
                        // get rid of the remainder
                        r = sMin_num % sMax_num;
                        sMax_num = sMax_num - r;
                }       
        }
}
void neg_num_check(short & sMin_num, short & sMax_num, short & sTemp, char cAdd_sub)
{       
        //make sure there are no negitive answers
        if (sMin_num < sMax_num && toupper(cAdd_sub) == 'S')
        {
                sTemp = sMin_num;
                sMin_num = sMax_num;
                sMax_num = sTemp;
        }
}
void problem_and_answer(short & sMin_num, short & sMax_num, char cAdd_sub, short & sUser_Answer, short & sReal_Answer)
{

                if (toupper(cAdd_sub) == 'A')
                        {
                                //display problem
                                cout << sMin_num << " + " << sMax_num << " = ";
                                cin >> sUser_Answer;
                       
                                //do problem
                                sReal_Answer = sMin_num + sMax_num;
                        }
                if (toupper(cAdd_sub) == 'S')
                        {
                                //display problem
                                cout << sMin_num << " - " << sMax_num << " = ";
                                cin >> sUser_Answer;
                               
                                //do problem
                                sReal_Answer = sMin_num - sMax_num;
                        }
                if (toupper(cAdd_sub) == 'M')
                        {
                                //display problem
                                cout << sMin_num << " * " << sMax_num << " = ";
                                cin >> sUser_Answer;
                                //do problem
                                sReal_Answer = sMin_num * sMax_num;
                        }
                if (toupper(cAdd_sub) == 'D')
                        {       
                                //display problem
                                cout << sMin_num << " / " << sMax_num << " = ";
                                cin >> sUser_Answer;
                                //do problem
                                sReal_Answer = sMin_num / sMax_num;       
                        }
}
void teacher()
{
        char cTpassword[14] = {' '};
        short sTeacher_menu = 0;
        short sTanswers_right = 0;
        short sTanswers_accumlator = 0;
        short sTanswers_counter = 0;
        cout << "Enter your pre-determined password: ";
        cin >> cTpassword;
       
        if (strcmp(cTpassword, "gradecheck999") == 0)
        {
                cout << endl << "Operation                Number to Enter" << endl;
                cout << "---------                ---------------" << endl;
                cout << "Class Average                    1      " << endl;
                cout << "Erase Class Average File        2      " << endl << endl;
                cout << "Enter your choice: ";
                cin >> sTeacher_menu;
                if (sTeacher_menu == 1)
                        {
                                ifstream sendFile;
                                sendFile.open("teacher.txt");
       
                                if (!sendFile.fail())
                                {       
                                                sendFile>>sTanswers_right;
                                               
                               
                                        while(!sendFile.eof())
                                        {       
                                                sTanswers_counter++;
                                                sTanswers_accumlator = sTanswers_right + sTanswers_accumlator;
                                                sendFile>>sTanswers_right;
                                        }
                                }
                                sTanswers_accumlator = sTanswers_right + sTanswers_accumlator;
                                cout << endl << "Class Average " << sTanswers_accumlator / sTanswers_counter << endl;
                                sendFile.close();
                        }
                if (sTeacher_menu == 2)
                        //erase the file
                //somehow pause the program (press any key)
                //go to main       
                main();
        }
        else
        {
                cout << "Wrong Password (remember, the password is case-sensitive)" << endl << endl;
                main();
        }
}

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It was just a txt file of his code, I posted all of his code anyways with modifications.