'comparison is always true due to limited range of data type' warning in C?

Question

I have the following code

//Point.h
#define WIDTH 8
#define HEIGHT 8

typedef struct Point
{
  char x;
  char y;
} Point;

//Board.c
#include 

        

Answer 1

Are you sure that char is signed? Try declaring the fields explictly as signed char and see what you get.