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

You cannot do it. C compiler cannot do such a complex thing on stack.

You have to use heap and dynamic allocation.

What you really need to do:

• compute size (nmsizeof(element)) of the memory you need
• call malloc(size) to allocate the memory
• create an accessor: int* access(ptr,x,y,rowSize) { return ptr + y*rowSize + x; }

Use *access(boardAux, x, y, size) = 42 to interact with the matrix.