What is the value of the variable a3 after execution of the following code?

Question

string a1,a2,a3;
a1="45";
a2="31";
a3=a2+a1;

Answer 1

ahh, how could I have missed that. it is a2+a1, not the other way around. That's why it's backwards.

Answer 2

You are adding two strings together, so they will be concatenated instead of treated as numbers and added. therefore, a3=="4531"
Stuff like this it would be better just to put in the code playground to test yourself.

Answer 3

But the answer is "3145"
pls recheck it once again and then tell me :)