changes on checkPointer to add message

game_solve.c

@@ -13,7 +13,6 @@ void usage() {
 }
 
 int main(int argc, char* argv[]) {
-
 	// check if nb of param is correct
 	if (argc != 3 && argc != 4) {
 		// nb param is not correct
@@ -48,8 +47,8 @@ int main(int argc, char* argv[]) {
 		if (argc == 4) {
 			char* filename = argv[3];
 			FILE* f = fopen(filename, "w");
-			checkPointer((void*)f);
-			test_output(fprintf(f, "%u\n", nbsolutions), 2, "Error in scan of file");
+			checkPointer((void*)f, "Couldn't open file\n");
+			test_output(fprintf(f, "%u\n", nbsolutions), 2, "Error in scan of file\n");
 			fclose(f);
 		}
 	}