C compile error: “Variable-sized object may not be initialized”

Question

Why do I receive the error \"Variable-sized object may not be initialized\" with the following code?

int boardAux[length][length] = {{0}};

Answer 1

After declaring the array

int boardAux[length][length];

the simplest way to assign the initial values as zero is using for loop, even if it may be a bit lengthy

int i, j;
for (i = 0; i