Thread: The problem of the usage of the Printf() in embedded systems

Dear Experts,
I have a semi kind of philosophical question with regards to the usage of Printf() function. My teacher remarked printf() methods could be disturbing when we use that function e.g in the embedded system environment. So removing these printf() calls is preferred.

Can you show me a illustrative example where it ( removing printf() ) is useful ? Besides of the embedded systems, Is there any other part where these Printf() calls would be disturbing ?

Thank you very much for your help!

Code:

#include <stdio.h>
int main()
{
	int result = sum( 4, 43);
	printf("result: %d", result);
	getch();
}
int sum ( int a , int b)
{
	printf("'a' variable: %d\n",a); // the disturbing printf() -s 
	printf("'b' variable: %d\n",b);
	printf("'summary: %d\n",a+b);
	return a+b;
}

"disturbing" - That takes on many meanings... What do they mean by that specifically?

My comment on that code is why have you got all those printfs? Your code does not need to send comments of everything that it is doing - That takes a lot of time to do, and if you are in an environment that doesn't use threads, everything is waiting for it to be done.

You could also construct your own string converting the integers and utilise "puts" I suppose, but you will be reinventing the wheel.