如何输出源文件的标题和目前执行行的行数

/****************************
*功能：输出源文件的标题和当前执行
*     行的行数
*目的：知识学习
****************************/
#include<iostream>
using namespace std;

void main()
{
int line=__LINE__;//注意：LINE前后分别是两个下划线“-”(半角状态下)
char*file=__FILE__;
cout<<"file name is "<<(file)<<",line is "<<line<<endl;
}

Table 1.1 ANSI Predefined Macros

Macro	Description
__DATE__	The compilation date of the current source file. The date is a string literal of the formMmm dd yyyy. The month nameMmm is the same as for dates generated by the library functionasctime declared in TIME.H.
__FILE__	The name of the current source file. __FILE__ expands to a string surrounded by double quotation marks.
__LINE__	The line number in the current source file. The line number is a decimal integer constant. It can be altered with a#line directive.
__STDC__	Indicates full conformance with the ANSI C standard. Defined as the integer constant 1 only if the /Za compiler option is given and you are not compiling C++ code; otherwise is undefined.
__TIME__	The most recent compilation time of the current source file. The time is a string literal of the formhh:mm:ss.
__TIMESTAMP__	The date and time of the last modification of the current source file, expressed as a string literal in the formDdd Mmm Date hh:mm:ss yyyy, whereDdd is the abbreviated day of the week andDate is an integer from 1 to 31.

#line

　　命令# line改变_LINE_ 与_ F I L E _的内容，它们是在编译程序中预先定义的标识符。

　　命令的基本形式如下：

　　# line number["filename"]

　　其中的数字为任何正整数，可选的文件名为任意有效文件标识符。行号为源程序中当前行号，文件名为源文件的名字。命令# line主要用于调试及其它特殊应用。

函数“line”举例

　　例如，下面说明行计数从1 0 0开始；printf( ) 语句显示数1 0 2，因为它是语句#line 100后的第3行。

　　#line 100 /* 初始化行计数器* /

　　main ( ) /* 行号100 是从定以后的下一行开始计数的*/

　　{ /* 行号101 */

　　p r i n t f ( " % d \ n " ，_ line _ ) ； /* 行号102 */

　　}