Basic Array Initialization in C

This is a discussion on Basic Array Initialization in C within the C Programming forums, part of the General Programming Boards category; Could someone please tell me how I can initialize an array to 1 please? The array has a size of ...

  1. #1
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    Basic Array Initialization in C

    Could someone please tell me how I can initialize an array to 1 please? The array has a size of 101 and the only way I can get it to set to 1 is to type:

    #define ARRAY_SIZE 101
    #define TRUE 1
    #define FALSE 0

    int array [ARRAY_SIZE] = {1,1,1,1,1...},

    with 101 1's!! What's the shorthand way of achieving this?

  2. #2
    and the hat of wrongness Salem's Avatar
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    Code:
    #define T_5     TRUE,TRUE,TRUE,TRUE,TRUE
    #define T_25    T_5,T_5,T_5,T_5,T_5
    int array [ARRAY_SIZE] = {T_25,T_25,T_25,T_25,TRUE};

  3. #3
    Budding Synth Programmer samGwilliam's Avatar
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    use a for loop (it's not technically initialisation) but it's more elegant than that^.

  4. #4
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    Use memset();


    int array[10];

    memset(array,1,10);


    you have to use the string.h library, but it is a lot cleaner than the for loop or one at a time.

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