Made configuring column size easier

connect4.c

@@ -19,6 +19,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <limits.h>
 #include <getopt.h>
 #include "macros.h"
 #include "config.h"
@@ -131,10 +132,14 @@ int main( int argc, char *argv[] ){
 		fprintf( stderr, "ERR: AMOUT OF ROWS MUST BE AT LEAST 1\n" );
 		return -1;
 	}
-	if( playboard.rows >= 32 ){
-		fprintf( stderr, "ERR: AMOUT OF ROWS MUST BE LESS THAN 32\n" );
+#define ROWOVERFLOW ( sizeof(column_t) * CHAR_BIT )
+	if( playboard.rows >= ROWOVERFLOW ){
+		fprintf( stderr,
+			"ERR: AMOUT OF ROWS MUST BE LESS THAN %d\n", (int)ROWOVERFLOW
+		);
 		return -1;
 	}
+#undef ROWOVERFLOW
 	// Start the actual program
 	printf(
 		VERSIONSTRING