Question

When I run the following code, I always get a floating-point exception. How can I fix it?

    #include <stdio.h>

    //Global Variables

    int num, denom, num1, denom1;

    void simplify(int *numerator, int *denominator);

    int main () {

    //Prompt User as to what program is
    printf("Fraction Simplifier\n");
    printf("===================\n");

    //Ask User for Numerator and Denominator
    printf("Numerator: ");
    scanf("%d", &num);
    printf("Denominator: ");
    scanf("%d", &denom);

    //Call Function
    simplify(&num1, &denom1);

    //Display final output
    printf("%d / %d = %d / %d", num, denom, num1, denom1);

    return 0;
    }

    //Simplify function
    void simplify(int *numerator, int *denominator)
    {

    num = num1;
    denom = denom1;

    num1 = num1 / num1;
    denom1 = denom1 / num1;
    num1 = *numerator;
    denom1 = *denominator;

    }

Answer 1

It looks as if num1 is never initialized. It will be zero, which will result in a division by zero.