Programming and Data Structures by Pearson

Preprocessor Directives 361

b) When the file name is included without double quotation marks, the search for file is made

only in the standard directories.

Example # include <stdio.h>

# include <udf.h>

11.9 Write a program to call the function defined in "udf.c" file.

# include <8tdio.h>

# include <conio.h>

# include *udf .c*

void main ()

{

clrscr () ;

displayO;

I

Q in y irL

Function called

Contents of udf.c file.

int display();display () {printf ("\n Function Called''); return 0;(

Explanation In the first program the "u d f. c " is included. It is a user defined function file. It is

complied before the main program is compiled. The complete ...