Simple C Puzzle

sansk · 05-20-2004, 01:50 AM

main()
{
if(condition)
printf("Hello ");
else
printf("world");
}

what should be the condition so that output is
Hello world

Thanks in advance
sansk

Hko · 05-20-2004, 07:40 AM

Not possible. Depending on the condition either the statement after the "if" or the statement after the "else" will be executed.

bluie · 05-20-2004, 10:05 AM

Not possible? But the following code compiles and gives the requested output.

Code:

#include <stdio.h>

int
foo()
{
  printf("Hello ");
  return 0;
}

#define condition foo()

int
main()
{
if(condition)
printf("Hello ");
else
printf("world");
}


// Ok, ok, ok.  Just kidding ;)

Bye, bluie

Hko · 05-20-2004, 11:16 AM

Quote:

// Ok, ok, ok. Just kidding

Since it was called a "puzzle" by the original poster, I suppose that's the correct answer!
I didn't think of that. Nice.

Hko · 05-20-2004, 11:19 AM

Shorter solution:

Code:

main()
{
	 if(!printf("Hello "))
		  printf("Hello ");
	 else
		  printf("world\n");
}

The_Nerd · 05-20-2004, 03:16 PM

Thats gay

Hko · 05-20-2004, 03:23 PM

Quote:

Originally posted by The_Nerd
Thats gay

Huh?

WindowsBurner · 05-20-2004, 03:26 PM

if(1)
printf("Hello");
else
printf("world");

That would be one way of doing it.
Or

main() {
int x = 0;

if(x)
printf("Hello");
else
printf("world");

}

Just my two bits.

itsme86 · 05-20-2004, 04:24 PM

Quote:

Originally posted by WindowsBurner
if(1)
printf("Hello");
else
printf("world");

That would be one way of doing it.
Or

main() {
int x = 0;

if(x)
printf("Hello");
else
printf("world");

}

Just my two bits.

Neither of those would work.

The_Nerd · 05-20-2004, 07:17 PM

Well if you guys are going to be gay... then...

Code:

int main()
{
	int i;
	for (i=0;i<2;i++)
		if (!i)
			printf("Hello");
		else
			printf(" World!");
}

There... Thats my two cents! Btw it is just as valid as any other posted here.

h/w · 05-20-2004, 07:52 PM

Quote:

Originally posted by The_Nerd
Well if you guys are going to be gay... then...

There... Thats my two cents! Btw it is just as valid as any other posted here.

as funny as you think you might be OR just plain happy and excited to be on a forum like this because of whatever reasons you might have, people don't use this place for showing their smarts.
if you can help/contribute in a positive way, do so ... if not, go play with your toys.

the moderators might not be happy with this post of mine, and u werent talkin to me, but i just hate self-important fsckheads.

there ... that's my two cents! btw it is just as valid as your two posts here. :rollseyes:

WindowsBurner · 05-21-2004, 06:25 AM

Quote:

Neither of those would work.

What compiler are you using? Cause that works for me.

rkef · 05-21-2004, 07:54 AM

Windowsburner, your examples should compile on any sane C compiler, but they are not solutions to the puzzle at all.

Code:

$ ./burner00
Hello$

$ ./burner01
world$

$ ./burner00 ; echo -n " " ; ./burner01 ; echo
Hello world
$

No compiler, given your source files, should produce an executable which, when run, outputs "Hello world\n". In your first example, the first "if" succeeds, and the "else" is thus skipped. The opposite happens in your second example...

The_Nerd · 05-21-2004, 10:32 AM

Quote:

Originally posted by h/w
as funny as you think you might be OR just plain happy and excited to be on a forum like this because of whatever reasons you might have, people don't use this place for showing their smarts.
if you can help/contribute in a positive way, do so ... if not, go play with your toys.

the moderators might not be happy with this post of mine, and u werent talkin to me, but i just hate self-important fsckheads.

there ... that's my two cents! btw it is just as valid as your two posts here. :rollseyes:

Funny??? That was a perfectly valid, and perfectly fine contribution. It is a puzzle is it not? It is not like some guy has to have a correct answer quickly or he will get fired. Get off it man, this post is just for fun.

The only reson I call it gay is because the answers supassed the origional question. The origional question could never be true. But with what the people here did, you could just have easly got rid of the if statement all together and just did a printf!

Dood, I think you are way to tight. Loosen up a bit ok. Join in on our fun, just don't mock it.

Btw... That is now 4 cents.

The_Nerd · 05-21-2004, 10:33 AM

By the Way WindowsBurner... You need a new compiler bad!