Break statement inside two while loops

Question

Let's say I have this:

while (a) {
  while (b) {
    if (b == 10) {
      break;
    }
  }
}

Question: Will the break statement take me out of both loops or only from the inner one? Thank you.

Solution 1

In your example break statement will take you out of while(b) loop

while(a) {

   while(b) {

      if(b == 10) {
         break;
      }
   }  
   // break will take you here.
}

Solution 2

It will break only the most immediate while loop. Using a label you can break out of both loops: take a look at this example taken from here

---

public class Test {
  public static void main(String[] args) {
    outerloop:
    for (int i=0; i < 5; i++) {
      for (int j=0; j < 5; j++) {
        if (i * j > 6) {
          System.out.println("Breaking");
          break outerloop;
        }
        System.out.println(i + " " + j);
      }
    }
    System.out.println("Done");
  }
}

Solution 3

Only from the inner one. Use labeled break if you wish to break to specific loop

label1:
for(){
  label2:
  for(){
      if(condition1)
      break label1;//break outerloop

      if(condition2)
      break label2;//break innerloop
  }
}

Also See

• labeled break

Solution 4

while (a) {

   while (b) {

      if (b == 10) {
          break;
      }
   }
}

In the above code you will break the inner most loop where (ie. immediate loop) where break is used.

You can break both the loops at once using the break with label

label1: 
while (a) {

   while (b) {

      if (b == 10) {
          break label1;
      }
   }
}

Solution 5

@Abhishekkumar

Break keyword has it's derived root from C and Assembly, and Break it's sole purpose to passes control out of the compound statement i.e. Loop, Condition, Method or Procedures.

Please refer these...

http://tigcc.ticalc.org/doc/keywords.html#break

http://www.functionx.com/cpp/keywords/break.htm

http://en.wikipedia.org/wiki/Break_statement#Early_exit_from_loops

So, if you want to get out of Two loops at same time then you've to use two Breaks, i.e. one in inner loop and one in outer loop.

But you want to stop both loop at same time then you must have to use exit or return.

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