Please explain break and continue on Objective-C

objective-c

Solution

A `break` statement exits the loop. You can think of it as a means to create loop exit conditions.

For example, in your code: `for(int i=0; i<100; i++)`, `i<100` is a loop condition. i.e. loop will exit if this condition is not met.

Similarly, inside if you have something like `if(i == 34) { break; }`. This will exit the loop when value of `i` reaches 34 even though the loop exit condition specified was `i<100`.

A `continue` statement is used to skip to the next loop cycle. This statement is used to basically avoid running the rest of the code within the loop.

Example:

for(i=0; i<5; i++) {
   if(i == 3) {
      continue;
   }
   print(i);
}

This loop will print `0 1 2 4`. When `i` will be 3, `continue` will skip to the next loop iteration and the statements after `continue` (i.e. `print(i);` will not execute). Ofcourse, the loop condition is checked before the loop runs.

Problem

First excuse my newbie question. I am learning Objective C and very new to programming itself. Can you guys explain me what causes a break or continue inside a loop? For example, what is the difference between the two codes? ``` for (int i=0; i<100; i++) { if ([self okToProceed]) { [self doSomething]; } else { break; } } ``` and ``` for (int i=0; i<100; i++) { if ([self okToProceed]) { [self doSomething]; } else { continue; } } ``` Will the first code stop the loop the first time okToProceed returns false and the second loop simply continue to run, but doing nothing when okToProceed is false?

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