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Thiengineer
Thiengineer
Last Activity: Feb 5 '07, 06:00 AM
Joined: Feb 2 '07
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  • Thiengineer
    replied to How to swap pointers
    in C
    This is what I have so far...am I on the right track? Please help!!

    void intpswap(int *xp, int *yp)
    {
    int t = *xp;
    *xp = *yp;
    *yp = t;
    }
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    • Thiengineer
      replied to printf / output questions in C
      in C
      Thank you for all your help!

      I now understand a-c, but still uncertain about part d.

      I don't understand how there is a segmentation fault, if that is the case.

      Can someone please explain what's going on on part d?

      Thanks again!
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      • Thiengineer
        started a topic How to swap pointers
        in C

        How to swap pointers

        I don't know how to approach this problem, please help!

        The following code is in main:

        Code:
        main()

        {  int x=1,y=2;
           int *xp,*yp;
           .
           .
           .
           xp = &x;
           yp = &y;
           intpswap(<arg1>,<arg2>);
           x=3;y=4;
           printf("*xp =
        ...
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        • Thiengineer
          started a topic printf / output questions in C
          in C

          printf / output questions in C

          Given the following code in C:

          Code:
           char *s[] = {"program","test","load","frame","stack",NULL};
 char **p = s + 2;
          Questions:

          a) printf{"%s",p[-2] + 3);

          b) printf("%c%s",* (s[1]),*p+1);

          c) printf("%c%c%c% c", **s+1, *(*(p-1)+1), *(*s+3)+2, *(p[-1]+strlen(p[-1])-1));...
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