Question

How to cast back from void* ?

int *a[13][12];
void *b
int *c[13][12];

b = (void*) a;
c = (?????) b;

This

c = (int *[13][12])b;

says cast specifies array type

This

c = (int *[][])b;

says array type has incomplete element type.

Compiler is gcc (Ubuntu/Linaro 4.6.1)

Answer 1

In C, you cannot assign to an array, so since c is declared as an array of arrays of pointers to ints, you can’t assign it directly.

You could however overwrite all of its items by assigning c[i][j] in turn inside a for loop, for example.