c语言中printf("%%a",a);,c 语言标准I/O库复习
I/O函数:字符i/oint printf( const char *format, ... );int scanf( const char*format, ... );控制符如下:%casinglecharacter%dadecimalinteger%ianinteger%e,%f,%gafloating-pointnumber%oanoctalnumber%s...