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Mar 20th, 2009

return array to main

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what is the syntax of returning a two dimensional to main function?

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miniroselit

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Mar 20th, 2009

Re: return array to main

C Syntax (Toggle Plain Text)
int** foo()
{
    int i;
    int** array = malloc(100 * sizeof(int *));
    for(i = 0; i < 100; i++)
        array[i] = malloc(20 * sizeof(int)); // allocate 20 integers
    return array;
}
 
int main()
{
    int ** array = foo();
}
int** foo()
{
    int i;
    int** array = malloc(100 * sizeof(int *));
    for(i = 0; i < 100; i++)
        array[i] = malloc(20 * sizeof(int)); // allocate 20 integers
    return array;
}

int main()
{
    int ** array = foo();
}

Last edited by Ancient Dragon; Mar 20th, 2009 at 7:45 am.

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Mar 20th, 2009

Re: return array to main

for simplification returned array will be of type:

c Syntax (Toggle Plain Text)
int array[100][20] ;
int array[100][20] ;

or u can modify above function to get variable 2D array:

c Syntax (Toggle Plain Text)
int** foo(int row, int col)
{
    int i;
    int** array = malloc(row * sizeof(int *));
    for(i = 0; i < 100; i++)
        array[i] = malloc(col * sizeof(int)); // allocate 20 integers
    return array;
}
 
int main()
{
    int ** array = foo(100,20);
}
int** foo(int row, int col)
{
    int i;
    int** array = malloc(row * sizeof(int *));
    for(i = 0; i < 100; i++)
        array[i] = malloc(col * sizeof(int)); // allocate 20 integers
    return array;
}

int main()
{
    int ** array = foo(100,20);
}

same result.

Last edited by Narue; Mar 20th, 2009 at 12:11 pm. Reason: added code tags

Luckychap

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Mar 21st, 2009

Re: return array to main

Luckychap;
ur solution is realy helpful. Thak you so much...

miniroselit

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May 19th, 2009

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Re: return array to main

Correction:

c Syntax (Toggle Plain Text)
for(i = 0; i < row; i++)
for(i = 0; i < row; i++)

Last edited by Luckychap; May 19th, 2009 at 7:08 pm.

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