Thread: Finally got this C program to run but can't figure out the standard deviation problem

Hey guys, I lurk these forums a good amount but never registered to post myself. I have this C++ assignment I'm working on that is now overdue and killing me! If anyone has any suggestions i'd greatly appreciate it!



Okay here's a link to the actual project. It's already overdue because I can't figure it out and get it to run no matter what I try!
http://www.cs.ucf.edu/courses/cop322...s/Program4.pdf

This is the code I have, completed:

Code:

#include <stdio.h>
#include <math.h>


int main() {

     int num_shows, num_contestants, num_judges, sd_threshold;
     double average;

// Open the text file.
     FILE* ifp = fopen("ucfidol2.txt", "r");

//scanning info from text file
     fscanf(ifp, "%d", &num_shows);
     fscanf(ifp, "%d%d%d", &num_contestants, &num_judges, &sd_threshold);

//declaring array size by text file
     int score[num_contestants][num_judges];
     int i, j;

//populates 2d array with numbers from text file
     for (i = 0; i < num_contestants + 1; i++) 
          for (j = 0; j < num_judges; j++)
               fscanf(ifp, "%d", &score[i][j]);

     int judges_score[num_judges];
     int index;

     for (i = 0; i < num_judges; i++)
          scanf("%d", &average[i]);

     int val = 0;
     double sum = 0;

//adds judges scores together
     for (val=0; val <= num_contestants-1; val++) {
          sum = sum + score[val][0];

//testing
printf("val = %d\n", val);
printf("score[0][%d] = %d\n", val, score[val][0]);
printf("sum = %lf\n", sum);
}

//calculates average of judges scores
     average = sum / num_contestants;
          printf("average = %lf\n", average);


//NEED THIS CODE!!!



//printing test
//printf ("%d\n", score[0][0]);
//printf ("%d\n", score[0][1]);
//printf ("%d\n", score[0][2]);
//printf ("%d\n", score[0][3]);
//printf ("%d\n", score[1][0]);
//printf ("%d\n", score[1][1]);
//printf ("%d\n", score[1][2]);
//printf ("%d\n", score[1][3]);
//printf("num_shows = %d\n", num_shows);
//printf("num_contestants = %d\n", num_contestants);
//printf("num_judges = %d\n", num_judges);
//printf("sd_threshold = %d\n", sd_threshold);

// Close the file.
fclose(ifp);

system("PAUSE");
return 0;
}

I can't figure out the rest of the code for the life of me, I've tried a few things

someone sent me this (has different variables but it's easier to see how it works) but I can't make it work and get anything to print out...

Code:

for (i=0; i<judges; i++) {
        sum=0
        for (j=0; j<contestants; j++) {
        
    sum = ((pow(judavg[i]-score[j][i],2) + sum; 
}

    sd  = sqrt(sum/cont);
    if (sd > std)
    cheaters[i]=1
    else 
    cheaters[i]=0

Can anyone fill in the blanks for me? Also if I have any other errors please let me know!


I apologize for the poor formatting before.

You didn't think that when the forum warned you a dozen times that you needed code tags, that you should actually use code tags? You're also on the C++ forum, not the C forum. No one wants to read code with no indentation.


Quzah.

Knock yourself out: Standard deviation - Wikipedia, the free encyclopedia


Quzah.