Float Point Exception trouble

[Prisms]

For Some reason when I compile the screen says "Floating point exception". Here is my code was wondering if anyone could lend me a hand.

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 
char file[100];
int total = 0;
 
struct student
{
    int SID;
    int quiz[5];
} students[40], highscore, lowscore, avg;
 
void Textfile()
{
    FILE* numbers;
    int counter = 0;
    numbers = fopen(file, "r");
 
    if (numbers != NULL)
 
    {
        while (!feof(numbers))
        {
            fscanf (numbers, "%d %d %d %d %d %d", &students[counter].SID, &students[counter].quiz[0], &students[counter].quiz[1], &students[counter]. quiz[2], &students[counter]. quiz[3], &students[counter].quiz[4]);
            counter++;
        }
 
    total = counter - 1;
    fclose(numbers);
    }
 
    else
    {
        printf("The could not be opened");
    }
}    
 
int dataHighScore (int quiznum)
{
    int highscore = -1;
    int x = 0;
 
    for (x=0; x<total; x++)
    {
        if (x == 0)
        {
            highscore = students[x].quiz[quiznum];
        }
 
        else
 
        {
                if(highscore < students[x].quiz[quiznum])
                highscore = students[x].quiz[quiznum];
            }    
        }
 
        return highscore;
    }
 
    int dataLowScore (int quiznum)
    {
        int lowscore = -1;
        int x = 0;
 
        for(x=0;x < total;x++)
        {
            if(x==0)
            {
                lowscore = students[x].quiz[quiznum];
            }
 
            else
            {
                if(lowscore > students[x].quiz[quiznum])
                lowscore = students[x].quiz[quiznum];
            }
        }
 
        return lowscore;
    }
 
    int dataAvg (int quiznum)
    {
        int avg = 0;
        int x = 0;
        for (x=0;x < total; x++)
        {
            avg = avg + students[x].quiz[quiznum];
        }
 
        avg = avg/total;
        return avg;
    }
 
    void print()
    {
        int x = 0;
        printf("....................................Student Quiz Grades...................................\n");
        printf("___________________________________________________________________________________________\n");
        printf("Student                Quiz1            Quiz2            Quiz3            Quiz4            Quiz5\n");
 
        for(x=0; x<total;x++)
        {
            printf("%4d                %3d                %3d                %3d                %3d                %3d\n", students[x].SID, students[x].quiz[0], students[x].quiz[1], students[x].quiz[2], students[x].quiz[3], students[x].quiz[4]);
        }
 
        printf("High Score            %3d                %3d                %3d                %3d                %3d\n", highscore.quiz[0], highscore.quiz[1], highscore.quiz[2], highscore.quiz[3], highscore.quiz[4]);
        printf("Low Score            %3d                %3d                %3d                %3d                %3d\n", lowscore.quiz[0], lowscore.quiz[1], lowscore.quiz[2], lowscore.quiz[3], lowscore.quiz[4]);
        printf("Avg Score            %3d                %3d                %3d                %3d                %3d\n", avg.quiz[0], avg.quiz[1], avg.quiz[2], avg.quiz[3], avg.quiz[4]);
        printf("____________________________________________________________________________________________\n");
 
    }
 
    int main()
    {
        int x = 0;
        highscore.SID = 9999;
        lowscore.SID = 9998;
        avg.SID = 9997;
 
        printf("Please enter the text file:\n");
        scanf("%s", file); 
 
        Textfile();
        for(x=0;x < 5; x++)
        {
            highscore.quiz[x] = dataHighScore(x);
            lowscore.quiz[x] = dataLowScore(x);
            avg.quiz[x] = dataAvg(x);
        }
        print();
        return 0;
    }
 

[Banfa]

Interestingly you appear to be doing no floating point arithmetic so when you get this sort of thing you need to check for maths errors.

Typical errors are an accidental divide by 0 or calling a maths function with out of range values (trying to take the logarithm of a negative number for instance).

Your code has a divide so verify that you are not dividing by 0.


On a style point having global variables is very bad style and hinders maintenance and bug fixing. Both of your 2 global variables, file and total could easily be made local to main. Pass the variables to the functions that need them and have TextFile return a value for total. However I think this is just bad style rather than the cause of your problem.