INTERVIEW QUESTIONS C FUNCTIONS IN C DETAILS

Question: Write a program with out using
main() function?

Answer: #include<stdio.h>

#define decode(s,t,u,m,p,e,d) m##s##u##t
#define begin decode(a,n,i,m,a,t,e)

int begin()
{
printf(" hello ");
}

#include<stdio.h>

#define decode(s,t,u,m,p,e,d) m##s##u##t
#define begin decode(a,n,i,m,a,t,e)

int begin()
{
printf(" hello ");
}

Source: CoolInterview.com

That's a very clever way of doing it. But still the code includes main!! Which means there is no answer for this question. Or perhaps i should say there is no way you could write a code with no main function in it.

Source: CoolInterview.com

It is not possible without main function Source: CoolInterview.com

main is a system defined function in C and since the program execution in c begins from the opening brace of main function it is mandatory to have main function in c. Source: CoolInterview.com

#include <stdio.h>
_start()
{
_exit(myFunction());

}

int myFunction()
{
printf("Hi I called without main
");
}

--------------------------------------------------------------
But you have compile this file as below

gcc -nostartfiles foo.c Source: CoolInterview.com

#define main() START
START
{
printf("hi");
return 0;
getch();
} Source: CoolInterview.com

Actually i didn't tried the first answer.except first one nothing works.please check it out. Source: CoolInterview.com

Writing a program without using main().
------------------------------
/** test_file.c **/

void func()
{
printf (" v2karade
");
exit(0);
}
-----------------------------

$gcc -nostartfiles -e func test_file.c

This will execute the func() function as main().

Source: CoolInterview.com

The execution starts from the main so it is not possible to start execution without main function. the above programs are not useful Source: CoolInterview.com

#include

#define decode(s,t,u,m,p,e,d)m##s##u##t

#define begin decode(a,n,i,m,a,t,e)

int begin()

{

printf("HELLO")

} Source: CoolInterview.com

it is nt possible 2 write a program widout main function as d program execution strts and ends at main Source: CoolInterview.com

If you have the better answer, then send it to us. We will display your answer after the approval.

Rules to Post Answers in CoolInterview.com:-

• There should not be any Spelling Mistakes.
• There should not be any Gramatical Errors.
• Answers must not contain any bad words.
• Answers should not be the repeat of same answer, already approved.
• Answer should be complete in itself.

Name :*
Email Id :*
Answer :*
Verification Code	Not readable? Load New Code
Enter the above shown code: *
	Inform me about updated answers to this question