The New C:
By Randy Meyers, January 01, 2002
Randy shows that pointers to VLAs are as convenient as pointers to normal arrays. The question is: how many programmers understand pointers to arrays in the first place? Look here to see if you're one of them.
January 2002/The New C/Listing 3
void ex3()
{
int i, j;
int a[3][3];
int (*pa)[3] = a;
for (i = 0; i < 3; ++i)
for (j = 0; j < 3; ++j)
pa[i][j] = 1;
// Save the result of calling f()
// so the bounds of vla, pvla, and
// the loop will be consistent
int bounds = f();
int vla[3][bounds];
int (*pvla)[bounds] = vla;
for (i = 0; i < 3; ++i)
for (j = 0; j < bounds; ++j)
pvla[i][j] = 1;
}
— End of Listing —
