In this c program I have to be able to read from a file that can have up to 40 students. print the high, low, and average of quizzes, and students grade while quiz 1, 2, 3 are 50% and 3, 4 are the other 50%. I'm stuck ...........help please..

Input looks like:

Student      Quiz    Quiz    Quiz   Quiz   Quiz
5052            78     23        78      78       99
5022            89     65        87      89       76
5552            98     87        78      90       67

Output should look like:

Student      Quiz    Quiz    Quiz   Quiz   Quiz      Grade
5052            78     23        78      78       99         73.83
5022            89     65        87      89       76         81.45
5552            98     87        78      90       67         83.08
High Score    98     87       87        90      99
Low Score      78    23       78        78      67
Average       88.33  58.3   81    85.67   80.67    79.45

This is what I have so far any help this is all new to me.

#include <stdio.h>
#include <stdlib.h>

#define MAXROW 40
#define MAXCOL 5

#define FLUSH fflush(stdin)


// function declarations 

void getData (FILE* dataInput, int* scores[MAXROW][MAXCOL]);
int small ( const int scores[MAXROW][MAXCOL], int students, int tests );
int large ( const int scores[MAXROW][MAXCOL], int students, int tests);
void quizAvg (const int scores[MAXROW][MAXCOL], float colAvg[]);
void studentAvg (const int scores[MAXROW][MAXCOL], float *rowAvg1[][MAXCOL], float *rowAvg2 [][MAXCOL], float rowAvg [][MAXCOL]);
int printData (FILE* results, const int scores[MAXROW][MAXCOL]);
int calcorderAmt (int quantHand, int reorderPt, int minOrder);

int main (void)
{
    // Local Declarations
    FILE* dataInput;
    FILE* results;
    int row, col;
    int scores [MAXROW][MAXCOL];


// Statements
   printf ("Begin Report.\n");

   if (!(dataInput = fopen("inventory.txt", "r")))
   {
    printf ("Error opening file\n\n");

    return (100);
    }     // if open input

    if (!(results = fopen ("result.txt", "w")))
    {
      printf ("\aError opening grades file\n");

      return (102);
      }  // if open output
fprintf (results, " ", printData);
   // while (getData
       //  (dataInput, &)

 fprintf (results, "\tEnd of Report\n\n");          
    fclose (dataInput);
    fclose (results);

    printf ("End of Report\n");
    system ("PAUSE");
    return (0);
}// main

/*========================getInventory=============================
        Pre  dataInput is an open file.

        Post reads the array
             if  data read -- returns 1
             if EOF or error --returns 0

*/

void getData (FILE* dataInput, int* scores[MAXROW][MAXCOL])
  {
//  Local Declarations
    int i,j;
    int ioResult [i][j];


//  Statements 
    ioResult [i][j]= fscanf (dataInput, "%d", scores[MAXROW][MAXCOL]);
    if (ioResult[i][j] ==EOF)
       return 0;
    else if (ioResult [i][j]!=40)
    {
         printf ("\aError reading data\n");
         return 0;
         }  // if
    else 
         return;
         }  // getData

/*===============================Find the maximum grade====================================*/


int large ( const int scores[MAXROW][MAXCOL], int students, int tests)
{
    int i;
    int j;
    int highGrade = 0;   //initialize to lowest possible grade

        for (i=1; j < tests; j++) //
        {
             for (j=1; j < tests; j++) // loop through columns of scores 
                {
                if (scores[i][j] > highGrade) 
                   {
                   highGrade = scores[i][j];
                   }
                }
            }
return highGrade;
}

/*========================Find the minimum grade===============================================*/



int small( const int scores[MAXROW][MAXCOL], int students, int test )
{
    int i; //student counter
    int j; //exam counter
    int lowGrade = 100; //highest possible grade

    for (i=1; j < test; j++)
    {
           for (j=1; j < test; j++) // loop through columns of scores 
            {
            if (scores[i][j] < lowGrade) 
               {
               lowGrade = scores[i][j];
               }
            }  
         } 
         return lowGrade; //return lowGrade;
}    

/*===========================Column/Quiz Average=============================================*/

void quizAvg (const int scores[MAXROW][MAXCOL], float colAvg[])
{
       int i;
       int j;
     for (int j = 1; j < MAXCOL; j++)
     {
         for (int i = 1; i < MAXROW; i++)
         colAvg [j] += scores [i][j];
         colAvg [j] /= MAXROW;
         }
     return;
}
/*=============================Row/Student Averages===================================*/

void studentAvg (const int scores[MAXROW][MAXCOL], float *rowAvg1[][MAXCOL], float *rowAvg2 [][MAXCOL], float rowAvg [][MAXCOL])
{
    float *rowAvg1 [][MAXCOL];
    float *rowAvg2 [][MAXCOL];
    int i;
    int j;

     for (int i = 1; i < MAXROW; i++)
     {
         //for (int j = 1; j < MAXCOL; j++)
         *rowAvg1 [MAXROW][j] = ((scores [MAXROW][1] + scores [MAXROW][2] + scores [MAXROW][3]) /3 *0.5);
         *rowAvg2 [MAXROW][j]= ((scores [MAXROW][4] + scores [MAXROW][5]) /2 * 0.5);
         rowAvg [i][j]= (*rowAvg1[MAXROW][j] + *rowAvg2[MAXROW][j]) /2;
         }
     return;
}//rowAvg

/* ====================printData=============================================
   Writes student grade data to output file
          Pre results is an open file
          Post Data written to files
*/

int printData (FILE* results, const int scores[MAXROW][MAXCOL])
{
    // statements
    fprintf (results, "   %d\n", getData);
    fprintf (results, "High Score   %d", highGrade);
    fprintf (results, "Low Score   %d", lowGrade);
    fprintf (results, "Average   %5.2f", quizAvg);
    fprintf (results, "Grade   %5.2f", studentAvg);
    return 0;

}  //   printData

Edited 3 Years Ago by Reverend Jim: Fixed formatting

Error: Put it in CODE TAGS. !!!

You have lots of errors in this code man...

1> In getData functions you are returning values return 0; at several places but its a no return void type of function. So either change the return statements or change the type of return for this function to int.

2>Every place with:

for(int j = 1; ........; ......)

Needs correction.This is C we are talking about here and it supports only :

int j;
for(j = 1; j < MAXCOL; j++)
{
}

And ya don't redeclare the same things over again.

3>In function studentAvg() multiple declaration of float *rowAvg1[][MAXCOL], float *rowAvg2 [][MAXCOL] ,When you are passing the values to the function then why redeclare it again ???

4>function :

int printData (FILE* results, const int scores[MAXROW][MAXCOL])
{
// statements
fprintf (results, " %d\n", getData);
fprintf (results, "High Score %d", highGrade);where is high grade???
fprintf (results, "Low Score %d", lowGrade);
fprintf (results, "Average %5.2f", quizAvg);
fprintf (results, "Grade %5.2f", studentAvg);
return 0;
}

Where are the values of getData highGrade lowGrade and all??? these are not even function calls.

I stopped at this point itself because you are so dumb that you haven't compiled the code at all. We are here to help not compile your stuff and show you every mistake of yours.Put in some effort ok.Daniweb is not your online compilation and debugging unit!!!

Your instructions said print, but you're writing results to a file!

Add code tags, clean up, and re-read your instructions.

ok sorry for asking for help I did compile actually and I am suppose to print results to another file. Thanks for all you help!

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