UbuntuマシンでＣのコンパイル時、sqrtが失敗。 undefined reference to `sqrt'というMSG。 gcc -lm SourceFile.c オプションを付ける。

9:00-20:30 Cloudy/Rainy Yesterday's calculation was wrong, even I spent many times. Summarize ongoing researches to PPT. Recalculate carefully, step by step. Cut bangs with kitchen scissors carefully, little by little. With many great comb…