Wierd pointer problem

This is a discussion on Wierd pointer problem within the C Programming forums, part of the General Programming Boards category; Code: 1 #include <stdio.h> 2 3 main() 4 { 5 char *x; 6 char *s; 7 scanf("%s", s); 8 x ...

  1. #1
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    Wierd pointer problem

    Code:
      1 #include <stdio.h>
      2
      3 main()
      4 {
      5     char *x;
      6     char *s;
      7     scanf("%s", s);
      8     x = "2352";
      9     printf("s: %s\n", s);
     10     printf("x: %s\n", x);
     11 }
    Why do I get a segfault after I input the value of s?

    Your help is appreciated.

  2. #2
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    *s is a new pointer, at the start. It's pointing to NULL, most likely, depending on your compiler.

    Now you're assigning a char, to NULL - that's the infamous "NULL pointer assignment".

    You can't do that.

    Turbo C doesn't crash with your code, but can't print out the char, either, just gives the error. If I kept doing it, it would crash, of course.

  3. #3
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    So how would I go about doing what my code intends to do?

  4. #4
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    Give it something to point to, like you did with x.

    There might be one more problem, but try that.

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