diff options
| -rw-r--r-- | lib/coordinate.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/coordinate.c b/lib/coordinate.c index f92c22a..26bbca5 100644 --- a/lib/coordinate.c +++ b/lib/coordinate.c @@ -4,19 +4,19 @@ #include "coordinate.h" /* - * Returns 0 if the coordinate is between a1 and h8. + * Returns 1 if the coordinate is between a1 and h8. */ int coord_is_valid(char *s) { if (strnlen(s, 3) != 2) - return 1; + return 0; char col = tolower(s[0]); char row = tolower(s[1]); if (col >= 'a' && col <= 'h' && row >= '1' && row <= '8') - return 0; + return 1; - return 2; + return 0; } /* |