Function for dynamic allocate two dimensional array in c

[CzyToNieDariusz]

Hi!

I was looking a lot about that, but i didn't find any answer so I decided to ask here.

I have a function:

void allocate(double **m,int n) {
     int i;
     m=(double**)malloc(n*sizeof(double *));
     for(i=0;i<n;i++)
      m[i]=(double*)malloc(n*sizeof(double));
}
 

and i want to write some values into the matrix so:

int main() {
double ** m
allocate(m,3);
m[1][2]=2;             '\* Here I have a segmentation fault
 
}
 

somebody can help?
thanks!

[Banfa]

You never pass the pointer returned by malloc to the calling function.

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