嘘言ってました．-Wallつけると標準エラー出力にでます。warning なので大丈夫とは思いますが． yptest.c: In function `main': yptest.c:11: warning: implicit declaration of function `exit' yptest.c:16: warning: unknown conversion type character `;' in format yptest.c:16: warning: unknown conversion type character `;' in format yptest.c:16: warning: unknown conversion type character `;' in format yptest.c:16: warning: unknown conversion type character `;' in format yptest.c:16: warning: unknown conversion type character `;' in format yptest.c:16: warning: unknown conversion type character `;' in format yptest.c:16: warning: too many arguments for format
