C++ help

Not going to do it for you, but I'll show you how it would be done in C:

 Spoiler

Code:

#include <stdio.h>

void main()
{
    FILE *fp;
    char gender='\0';
    float score=0.0;
    float scores[2];
    int results[2], x;
    char test[15]="";

    for ( x=0;x<2;x++)
    {
        scores[x]=0;
        results[x]=0;
    }
    if ( (fp = fopen( "C:\\sample.txt", "r" )) != NULL )
    {
        while ( !feof(fp) )
        {
            fscanf( fp, "%s %f\n\r", &gender, &score);
            switch ( gender )
            {
                case 'm':
                    scores[0] += score;
                    results[0]++;
                    break;
                case 'f':
                    scores[1] += score;
                    results[1]++;
                    break;
            }
            fprintf( stdout, "Processed %c %1.2f\n\r", gender, score );
        }

        fclose( fp );
        fprintf( stdout, "Sum female GPA = %2.2f\n\rSum male GPA = %2.2f\n\rFemale Count = %d\n\rMale Count = %d\n\rAverage Female GPA = %2.2f\n\rAverage Male GPA = %2.2f\n\r", scores[1], scores[0], results[1], results[0], scores[1]/results[1], scores[0]/results[0] );
    }
    else
    {
        fprintf( stdout, "Error, Unable to find file.\n\r" );
    }

}