Return from within loop?

[stevec]

Hi,

Is returning from within a loop ok?
The question may have been asked before.
I tried searching for "loop return", but got a forum error:
Fatal error: Allowed memory size of 33554432 bytes exhausted ...

#include <stdio.h>

void func_a(void)
{
  int i=0;
  while(i++<10)
  {
    printf("i=%d\n",i);
    if(i==5)
      return;  /*   return from within a loop, possible problem or not?    */
  }
}

int main(void)
{
  func_a();
  return(0);
}

[laserlight]

It certainly is okay, and your code does not appear to have any problems that should result in the error that you mentioned.

[itCbitC]

I think the OP is referring to the forum search feature, I too got that error a half hour ago.

[laserlight]

Oh yes, I see now.

[cpjust]

As long as you release any local dynamic memory or other resources before you exit, yes it's fine.

[C_ntua]

Also note these:
1) return. You get out of the loop and the function
2) break. You get out of the loop and the function continues normally after the loop
3) goto. Not recommended, but an option

Also, you can use continue to get to directly to the next iteration inside the loop.

[NeonBlack]

This is probably (in my opinion at least) the best way to break out of nested loops. I use this all the time.

[stevec]

Thanks everybody. I am good to go

[NeonBlack]

Also note that if you do this in a non-void function, you will probably get a warning unless you have another return as the last line of the function as well.