Help me with this output please. I want to output "you can't divide by 0 - error 01; when someone tries to divide by 0 (Solved)

Question

https://code.sololearn.com/cIS1MI1tme89/?ref=app

Answer 1

You can check value of <b> before moving on with division.

case '/':
if(b == 0) {
cout << "Division by zero\n";
}
else {
// perform division
}

CrazySun03 you posted this question before, and some people already proposed answers, may I ask you why post another one?

https://www.sololearn.com/Discuss/1679738/?ref=app

Answer 2

Alright then CrazySun03 , but if you still want to go with Exception way I might be able to help you a bit, which part of it that you find difficult? I'll see if I can shed a little light ...

Answer 3

Hey CrazySun03 I just paid a revisit to the Exception chapter, and strangely I feel the same with you, yes I think that chapter could use a little tweak.

I did a test with division by zero, using `try ... catch` but I feel something is odd, errors such as division by zero doesn't seem to captured in `catch` block, I get no output instead XD.

I will get back to you when I have better news to pass 👍

Answer 4

CrazySun03 I guess this article is related with, and may add an insight regarding division by zero error handling, I see the general voice there agree to check input before moving on with the operation.

https://stackoverflow.com/questions/15277129/c-divide-by-zero

Answer 5

CrazySun03 Excellent! I didn't even think you were really going to dig into it that far 😁

Thanks for sharing what you found, I'm glad you got it. Keep learning and keep sharing 👍

Answer 6

Ipang On the another question, i asked how to get (you can't divide by 0).
On this question, I wanted to learn how to use "Exceptions", since I read the article and i didn't understand it very well
I still don't know how Exceptions work, but your answer solved my problem

Answer 7

Ipang Well, i'm not very good at english, the C++ tutorial have translation, but the page of Exceptions doesn't.
If you read it, you will se that it have 3 pages, i understand the first two perfectly, but i don't get why i should need 'try' and 'catch'. It seems like i can do the same with only 'throw'

Answer 8

Ipang Also i don't know how to use 'try' on a quite longest code

Answer 9

Ipang Thank you very match.

If wasn't for you, i wouldn't know that i can use an statement inside of a loop, (like if inside an switch case).
Also thx for the article

Answer 10

Ipang I found how it works,

If you use just throw, the program will terminate, and throw a terminate error, followed by a mesagge that you write

If you use try and catch, you can now first, identify the error, and then trow a mesagge that you want, like "you can't do that - Error 99"

Answer 11

Eg:

With only throw:

int x = 2;
int y = 1;
if (y < x) {
throw "Error 99";
}
Output = Stopped
Terminate called after throwing an instance of 'char const*'
Error 99
--
If you use try and catch

try {
int x = 2
int y = 1
if ( y < x ) {
throw 99
}
catch (int x)
cout << "You can't do that - Error << x;
}

Output: You can't do that - Error 99

Answer 12

no problem dude, i really like programming, so if i have any doubt about something, i will try to understand it