Thread: getting wrong output from simple program

Originally Posted by d387420489

Code:

#include <stdio.h>

int main()

{

int a=100;
int c;

printf("%d\n", c);

c = a * a;

}

the output I'm getting is : 134513691
any ideas as to why I would be getting this output thanks.

Yes, because 'c' is unassigned before your printf statement and it's been assigned some random piece of memory that already contains data.

Because you initialize 'c' after you use it in your "printf()" function. Therefore, it can be any random value.

EDIT: beatbox beat me to it!

And if your "main()" function says it returns an integer ... then make sure it actually returns an integer! Typically, for a successful termination, you would:

Code:

  return 0;

thanks for the info I still have a lot to learn

Originally Posted by d387420489

thanks for the info I still have a lot to learn

Stop and think... can you tell me the answer before you know the question?

Neither can C.

It reads the page top down and does stuff in the order you tell it... so, printing the answer before it knows the question just doesn't make any sense, does it?

Originally Posted by AndrewHunter

Really???? - This post just might make my tag line. Where is quzah, I need a new quote!!!

He's been cold to me ever since you compared us to to a married couple.

Now be a good boy. Clean up your code, free your memory, and go to Sleep(28800000).