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Type: Posts; User: Salem

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  1. Replies
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    Maybe if you gave each expression in your diagram...

    Maybe if you gave each expression in your diagram a different name, it would help when you saw the code.
  2. sync(2): commit buffer cache to disk - Linux man...

    sync(2): commit buffer cache to disk - Linux man page - code
    sync(1): flush file system buffers - Linux man page - command line

    That the bogus files disappear on reboot could just be down to an...
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    > But does any function also have life time and...

    > But does any function also have life time and scope ?
    Their scope depends on whether you use the word 'static' or not.
    Their lifetime is the life of the program - excluding the case of functions...
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    It looks like you tried to compile without your...

    It looks like you tried to compile without your main.c



    $ head -20 foo.c main.c
    ==> foo.c <==
    #include<stdio.h>

    extern int x;
  5. It's returning int, so it's 20.

    It's returning int, so it's 20.
  6. Maybe this instead. return *p;

    Maybe this instead.

    return *p;
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    You start with this. int main() { int...

    You start with this.


    int main() {
    int lotto[49] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
    13, 14,15, 16, 17, 18, 19, 20, 21,22, 23, 24, 25,
    26,...
  8. > Line number 10 calls function next , but how...

    > Line number 10 calls function next , but how come value getting changed in bags arrary.
    Because
    a) you returned a pointer
    b) you dereferenced that pointer
    c) you have an assignment.

    Line 10...
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    Better variable names to start with. This...

    Better variable names to start with.

    This prints information about the structure of the shape you want


    for ( row = 0, items_on_row = 4 ; row < 3 ; row++, items_on_row-- ) {
    printf("Row %d...
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    First, you said > I want to create a program...

    First, you said
    > I want to create a program which generates 6 numbers from a range of 1 to 49.

    > Ok,but how is that going to help me input 6 numbers and check if the input I gave is right or...
  11. Seriously, compile with warnings and fix them...

    Seriously, compile with warnings and fix them before running code.


    $ gcc -Wall foo.c
    foo.c: In function ‘main’:
    foo.c:63:15: warning: format ‘%d’ expects argument of type ‘int *’, but argument...
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    Well next, let's introduce you to the idea of a...

    Well next, let's introduce you to the idea of a shuffle.



    // pick two random lotto number positions
    int p1 = rand() % 49;
    int p2 = rand() % 49;
    // now swap them over
    int temp = lotto[p1];...
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    Having a function called 'get' which returns...

    Having a function called 'get' which returns nothing is just weird.

    And just pushing the infinite recursion out of main doesn't really make much progress.



    #include <stdlib.h>

    void...
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    > printf("%d",lotto[i]); So change the format...

    > printf("%d",lotto[i]);
    So change the format string

    printf("%d ",lotto[i]);
    or
    printf("%d, ",lotto[i]);
    or
    printf("%d\n",lotto[i]);
    or
    printf("= %d\n",lotto[i]);
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    > combination(a,start+1, 3); Perhaps...

    > combination(a,start+1, 3);
    Perhaps
    combination(a,start+1, com-1);

    The whole point of a recursive function is that you call yourself with a simpler version of the problem.
    Which in this case,...
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    > The code is indeed complicated but since this...

    > The code is indeed complicated but since this is the only thing I found...
    So it looks like wolly isn't interested in learning after all.
    Just another drive-by looking for easy google answers.
    ...
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    int numbers[49]; for ( int = 0 ; i < 49 ; i++ )...

    int numbers[49];
    for ( int = 0 ; i < 49 ; i++ ) numbers[i] = i+1;


    vs this, which wastes element 0 of the array.


    int numbers[50];
    for ( int = 1 ; i <= 49 ; i++ ) numbers[i] = i;
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    Right, first issue is that arrays start at...

    Right, first issue is that arrays start at subscript 0.

    So either make your array 50 elements long, or your loop
    for ( i = 0 ; i < 49 ; i++ )


    Then I asked you to print the array.
    Which...
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    Well if you've never written any code, then all...

    Well if you've never written any code, then all the exuberance shown by the regulars probably isn't what you want.

    Here's an exercise for you.
    - create an array of 49 elements, and use a loop to...
  20. Well your first problem is that you have a main()...

    Well your first problem is that you have a main() which is poorly formatted, 100's of lines long AND riddled with goto's.
    Whoever's been responsible for your programming education up to now has been...
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    Hodor means that if you include that .h file in...

    Hodor means that if you include that .h file in more than one place, you end up with multiply defined symbols.
    Whilst technically correct for a single source file example, it's an awful example to...
  22. The standard library header files such as...

    The standard library header files such as stdio.h, string.h, stdlib.h etc are all resolved by libc, and the compiler automatically uses that.

    Historically, the math library was separate because...
  23. Thread: 3-D arrays

    by Salem
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    Right, so you've got 2D arrays figured out. A...

    Right, so you've got 2D arrays figured out.

    A 3D array would be something like


    int marks[YEARS][COURSES][STUDENTS];
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    command gcc -Wall -Wextra -o test test.c would...

    command gcc -Wall -Wextra -o test test.c
    would be a good place to start.


    command gcc --version
    would tell us just how old your compiler is.
  25. Thread: 3-D arrays

    by Salem
    Replies
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    > 5 stdudents is stuying in fisrt standard Whose...

    > 5 stdudents is stuying in fisrt standard Whose marks are as follows 40, 65, 98, 47, 65.
    > 8 stdudents is stuying in second standard Whose marks are as follows 58, 23, 40, 80, 65, 98, 47, 65.
    > 10...
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