Another way to use continue keyword in C++

Recently we found a "good way" to comment out lines of code by using continue:

for(int i=0; i<MAX_NUM; i++){
  ....
  .... //--> about 30 lines of code
  continue;
  ....//--> there is about 30 lines of code after continue
  ....
}

I scratch my head by asking why the previous developer put the continue keyword inside the intensive loop. Most probably is he/she feel it's easier to put a "continue" keyword instead of removing all the unwanted code...

It trigger me another question, by looking at below scenario:

Scenario A:

for(int i=0; i<MAX_NUM; i++){
  ....
  if(bFlag)
    continue;
  ....//--> there is about 100 lines of code after continue
  ....
}

Scenario B:

for(int i=0; i<MAX_NUM; i++){
  ....
  if(!bFlag){
  ....//--> there is about 100 lines of code after continue
  ....
  }
}

Which do you think is the best? Why? How about break keyword?