hello I am trying to compile a c program for sudoku. I have declare const instances as global variables, but when i try to compile the code it says that my declarations are not constant, here is some of the code. please help, thank you.
#include <stdio.h>
#include <assert.h>
const int GRIDSIZE = 3;
const int GRID_SQUARED = GRIDSIZE * GRIDSIZE; //this line
const int ALL_VALUES = (1<<GRID_SQUARED)-1; //and this give //the error
int board [GRID_SQUARED][GRID_SQUARED];
I get the very same error, for all three of the last lines of code you have. You'll have to think of another way to do this.
They need to be compile time constants which they clearly are not.
You need to write them out like this
#define GRIDSIZE 3
#define GRID_SQUARED (GRIDSIZE * GRIDSIZE)
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
