C language, log print file name, function name, line number, date and time

• __LINE__： Insert the current source line number in the source code 
• __FILE__： Insert the current source file name... In the source file 
• __FUNCTION__： Function name 
• __DATE__： Insert the current compile date... In the source file 
• __TIME__： Insert the current compile time... In the source file 

C Language use printf(“filename:%s”, FILE); Print file name , If it is found, the directory where the file is located will also be printed out

#include <string.h> //strrchr() The header file required by the function 
//windows:
#define filename(x) strrchr(x,'\\')?strrchr(x,'\\')+1:x
//linux :
#define filename(x) strrchr(x,'/')?strrchr(x,'/')+1:x
printf( "filename:%s\n", filename( __FILE__ ) );