目录包含头文件定python义宏条件编译取消宏定义其他编译控制包含头文件 指令:#includpythone用途:将指定的头文件内容插入到当前源文件中,使得当前源文件能够使用头文件中声明的函数、变量、类型定义等。这有助于代
When I try to use java.lang.System.console(), I get a null pointer. I can still write to out and read from in, but this only works when I run straight from my IDE. When I run the .jar file directly, n