Thread: finishing up the sorting program

  1. #1

    finishing up the sorting program

    I think there's bug in my program
    When I put in letter it prints 0.
    but when i put in numbers it says core error.
    what is wrong with this program?

    /* Program that utilizes simple functions illustrating call-by-reference and call-by-valye */

    #include <stdio.h>
    void swap(double*, double*);
    int read5(double*, double*, double*, double*, double*);
    double sort5(double*, double*, double*, double*, double*);
    double print5(double*, double*, double*, double*, double*);

    int main(void)
    { /* begin main */
    /* Declaration */
    double z, z1, z2, z3, z4;
    int checknum = 1;

    /* Check Scanf */
    while(checknum > 0)
    { /* start while */
    if (checknum == 0)
    { /* begin if */
    printf("Ends Program");
    checknum = -1;
    } /* end if */
    { /* begin else */
    checknum = read5(&z, &z1, &z2, &z3, &z4);
    sort5(&z, &z1, &z2, &z3, &z4);
    print5(&z, &z1, &z2, &z3, &z4);
    } /* end else */

    } /* end while */


    int read5(double *i, double *j, double *k, double *l, double *m)
    int check;

    check = scanf("%lf%lf%lf%lf%lf", *i, *j, *k, *l, *m);
    return check;

    } /* end read5 */

    double sort5(double *u, double *v, double *w, double *x, double *y)
    int index = 1;

    if(*u > *v)
    swap(u, v);
    index = 2;

    if(*u > *w)
    swap(u, w);

    if(*v > *w)
    swap(v, w);

    if(*w > *x)
    swap(w, x);


    double print5(double *i, double *j, double *k, double *l, double *m)
    printf("%lf %lf %lf %lf %lf", *i, *j, *k, *l, *m);

    void swap(double *largenum, double *smallnum)
    int tmp;
    tmp = *largenum;
    *largenum = *smallnum;
    *smallnum = tmp;

  2. #2
    ATH0 quzah's Avatar
    Join Date
    Oct 2001
    I had a horrible dream... it was a nightmare on a grand scale... No, wait, it's just me reading your code without the [c0de] [/code] tags...

    Hope is the first step on the road to disappointment.

  3. #3
    Code Goddess Prelude's Avatar
    Join Date
    Sep 2001
    I hate to break it to you quzah, but it doesn't get much better when the code is formatted.

    >what is wrong with this program?
    Quite a bit, but the access violation is caused by this line:
    check = scanf("%lf%lf%lf%lf%lf", *i, *j, *k, *l, *m);
    It should be something more like this
    check = scanf ( "%lf %lf %lf %lf %lf", &i, &j, &k, &l, &m );
    My best code is written with the delete key.

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