几个版面的编译信息都是CE,用G++编译反馈：
Main.c:1:20: error: iostream: No such file or directory
Main.c:3: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'namespace'
Main.c: In function 'main':
Main.c:11: error: 'cin' undeclared (first use in this function)
Main.c:11: error: (Each undeclared identifier is reported only once
Main.c:11: error: for each function it appears in.)
Main.c:17: error: 'cout' undeclared (first use in this function)
Main.c:18: error: 'endl' undeclared (first use in this function)