Predefined C Macros

1. C Program that print current DATE

#include <stdio.h>

int main(){

printf("Current date: %s",__DATE__); //calculate the current date

}

2. C Program that print current TIME

#include <stdio.h>

int main(){

printf("Current time: %s",__TIME__); //calculate the current time

}

3. C Program that print name of the file

#include <stdio.h>

int main(){

printf("File Name: %s",__FILE__); //calculate the name of the file

}

4. C++ Program that print integer constant

#include<iostream.h>

main()

{

cout<<__MSDOS__;

}

5. C Program that print line number of the file

#include <stdio.h>

int main(){

printf("Line Number: %d",__LINE__); //calculate the line number of file

}