1,#和##操作符Operator,使用 首个参数返回为一个带引号的字符串
predefined variable
was not declared in the scope;
2,调试debuging program,like breakpoint;
abort();把此函数放置于你想一终端语句的下一行;
too few arguments to function;
warning:no newline at end of file;
#include <stdlibrary.h>
void abort(void);
原文：http://www.cnblogs.com/ruiy/p/4474993.html