C++ Try Catch inside loop

Question

I have this C++ program with the following general structure

1st while (condition A == true)
  //some code for 1st loop

  2nd while (condition B == true)
    //some code for 2nd loop
    try
      //some code for try
    catch
      //condition B == false (supposed to leave 2nd loop and go back to first loop)

I want it to get out of 2nd loop when there's an exception and go back to 1st loop until condition B is tue again. As described above it doesn't work as I expect. What seems to be happening is that code gets stuck in catch and never leaves it.

How can I arrange it to make it work as I need?

Note: condition A is never false.

Solution

add the break keyword to the catch

Also notice that you have b == false; That is checking that b is equal to false, not setting b = false.

Comments

[ajon]

I think I will disagree here. I think it is totally fine to include ==true. It makes it more explicit and can at times be more readable. It is just a matter of coding conventions and styles. Personally, I do not include them, but I don't mind seeing them from other people.

[perr0]

Thank you! And indeed, I made a double mistake with condition == B inside catch (here and in the code itself). Thanks for pointing that out too. This show I need to read about break and continue again. I was trying continue but didn't even think about break (thought that it would stop program execution completely).

[Grzegorz]

No problem. I am not following my style, though, but what the coding gurus were teaching my at the university. I am passing this knowledge only.

[ajon]

break will break out of the current for loop. Glad to help.