Passing arrays

This is a discussion on Passing arrays within the C Programming forums, part of the General Programming Boards category; How could I do the following: Code: int[] somefunc(); int main(void){ int i; int array = somefunc(); for(i=0; i<10; i++) ...

  1. #1
    Registered User
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    Aug 2007
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    Question Passing arrays

    How could I do the following:
    Code:
    int[] somefunc();
    
    int main(void){
    	int i;
        int array = somefunc();
    	for(i=0; i<10; i++)
    		printf("%d\n", array[i]);
    }
    
    int[] somefunc()
    {
    	int size = 10, i;
    	int array[size];
    	for(i=0; i<size; i++)
    		array[i] = i;
    		
    	return array;
    }
    I set the array size and contents in somefunc() and the return the array to the main.

  2. #2
    ATH0 quzah's Avatar
    Join Date
    Oct 2001
    Posts
    14,826
    Code:
    int *somefunc( ... )
    {
        int *notreallyanarray = malloc( sizeof *notreallyanarray * sizeyouwant );
        ...
        return notreallyanarray;
    }
    The word you're wanting to search for is 'dynamic'.


    Quzah.
    Hope is the first step on the road to disappointment.

  3. #3
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    But like how do you return it to the main which doesn't know the size?

  4. #4
    ATH0 quzah's Avatar
    Join Date
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    I just showed you how. The size however isn't able to be determined with just a pointer alone. You will need to keep track of that on your own.


    Quzah.
    Hope is the first step on the road to disappointment.

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