user define function trouble!

i write this program in an excercise.. as a main funtion.. then rewrite it using function call by user define functions. I get lost. Please point out what i am wrong, and be gentle with me cause i am a beginner.. :)/

code for the first program.
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Code:

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#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
void main()
{        ofstream out;
        ifstream prob;
        char ch;
        static float fgpa = 0.0, mgpa= 0.0;
        float gpa, avfgpa, avmgpa;
        int fcout = 0, mcout = 0;
        prob.open("d:\\prob7-4.txt", ios::in);
        if (!prob)
        {
                cout<<"Can not open input file"<<endl;
                cout<<"program terminates!!"<<endl;
                return;
        }
        out.open("d:\\out.txt", ios::out);
        out<<fixed<<showpoint;
        out<<setprecision(2);

        prob.get(ch);
        prob>>gpa;
        while(!prob.eof())
        {
                switch (ch)
                {
                case 'F':
                case 'f': fgpa = fgpa+gpa;
                        fcout++;
                        avfgpa = fgpa/fcout;
                        break;
                case 'M':
                case 'm': mgpa = mgpa + gpa;
                        mcout++;
                        avmgpa = mgpa/mcout;
                        break;
                default: cout<<"invalid gender"<<endl;
                        return;
                }
                prob>>ch>>gpa;

        }
       
        out<<"Number of female ="<<fcout<<endl;
        out<<"Average female GPA  = "<<avfgpa<<endl;
        out<<"Number of male ="<<mcout<<endl;
        out<<"Average male GPA ="<<avmgpa<<endl;
        out.close();
        return;
}
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code for the function call rewrite from above

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Code:

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#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
void OpenFiles(char ch, float gpa);
void initialize(int fcout, int mcout, float fgpa, float mgpt);
void sumGrades( int fcout, int mcout, float fgpa, float mgpa);
void averageGrades(float avfgpa, float avmgpa);
void printResults(int fcout, int mcout, float avfgpa, float avmgpa);
void main()

{
        ofstream out;
        ifstream in;
        char ch;
        float gpa;
        float avfgpa;
        float avmgpa;
        int fcout, mcout;
        float fgpa;  //define female GPA
        float mgpa;  //define male GPA

        initialize (fcout, mcout, fgpa, mgpa);

        OpenFiles(ch, gpa);

        while(!in.eof())
        {
                sumGrades(fgpa,mgpa,fcout,mcout);
                in>>ch>>gpa;
                averageGrades(avfgpa, avmgpa);

        }


        printResults(fcout, mcout, avfgpa, avmgpa);

       
        return;
       
}

void OpenFiles(char ch, float gpa)
{

        ofstream out;
        ifstream in;
        in.open("k:\\prob-7.txt",ios::in);
        if (!in)
        {
                cout<<"Can not open input file"<<endl;
                cout<<"program terminates!!"<<endl;
        }
        in.get(ch);
        in>>gpa;
        in.eof();

        out.open("k:\\out.txt", ios::out);
        out<<fixed<<showpoint;
        out<<setprecision(2);
        //out<<"Female" <<ch<<endl;

}

void initialize(int fcout, int mcout, float fgpa, float mgpa)

{

        fgpa = 0.0;
        mgpa= 0.0;
        fcout = 0;
        mcout = 0;
}

void sumGrades(int fcout, int mcout, float fgpa, float mgpa)
{
       
        char ch;
        float gpa;
        OpenFiles(ch, gpa);
        switch (ch)
        {
                case 'F':
                case 'f': fgpa = fgpa+gpa;
                        fcout++;
                        //avfgpa = fgpa/fcout;
                        break;
                case 'M':
                case 'm': mgpa = mgpa + gpa;
                        mcout++;
                        //avmgpa = mgpa/mcout;
                        break;
                default: cout<<"invalid gender"<<endl;
                        return;
        }
       
}

void averageGrades(float avfgpa, float avmgpa)
{
       
        float fgpa,  mgpa;
        int fcout, mcout;
        sumGrades(fcout, mcout, fgpa, mgpa);
        avfgpa = fgpa/fcout;
        avmgpa = mgpa/mcout;
}
       
void printResults(int fcout, int mcout, float avfgpa, float avmgpa)
{
        ofstream out;
        out<<"Number of female ="<<fcout<<endl;
        out<<"Average female GPA  = "<<avfgpa<<endl;
        out<<"Number of male ="<<mcout<<endl;
        out<<"Average male GPA ="<<avmgpa<<endl;
        out.close();
}

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Code tags were added to this post so that you have a snowballs chance in hell of someone actually reading all that.

Use [ code ] (to open) and [ /code ] (to close) (minus the spaces) to format code.

Since theres a lot of code there and I dont feel like reading it all, could you be a little more specific about whats wrong with it so I know where to look? Does it not compile? What errors?

hi

i am johnnypiere

...

the first program write in main alone is working fine.

the second one does not compile, and give a lots of error vs warning, I think that having trouble with function calls, and passing to main function, but i have no idea to fix cause the book i am studying hasnt clear out much.

summerize what program will do :

open a file with 2 columes; one is letter of f or m (represent for female and male), the other colume is GPA (grade).

read it and sum the gpa of female , sum the gpa of male, and display the everage of female and male gpa.

the function calls need to have 5 of them:

initialize variable

open and format output

sum gpa of female and male

find the average of female male gpa

print the rerults.