removing the put char fixes it

printf.c

@@ -50,10 +50,10 @@ int _printf(const char *format, ...)
 				case '%': /*add 1 byte*/
 					break;
 			}
-			if (*(format + fmt_idx + 2))
+			/*if (*(format + fmt_idx + 2))*/
 				fmt_idx += 2;
-			else
-				fmt_idx += 1;
+			/*else*/
+				/*fmt_idx += 1;*/
 		}
 		else
 		{
@@ -67,6 +67,5 @@ int _printf(const char *format, ...)
 		_puts(buffer);
 		free(buffer);
 	}
-	_putchar('\0');
 	return (printed);
 }