parallel arrays 1

[lanre1]

Hello,
i'm so new to the C malloc() so i need some programer supervission on it. In the dynamic allocation of memory using malloc() to return the value of a proper type is it proper to do something like the following:

int **space;
// allocates memory space
for(i=0, i<n; i++)
space = (int*)malloc(n * sizeof(int*));

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does this next code also creat a parall array
or do i have to reallocate another memory space as i did befor?

space=(int*)malloc(sizeof data);

if I have misunderstood parrall array please redirect me.

Thank to all

 

[Salem]

I'm not sure what you're trying to achieve here, your use of malloc is wrong.

To allocate some memory which has the same subscripts as int arr[X][Y], you would do this

int **arr;
arr = malloc( X * sizeof *arr );
for ( i = 0 ; i < X ; i++ ) arr[i] = malloc( Y * sizeof *arr[i] );

--

 

[RanganathRamachandra]

what is a parallel array ? do you mean a 2-dimensional array ?