What is the aim of these lines in my code ?

Question

Good day everyone, I just have a couple of questions that I wish you could help me at.
So, here is the code.
int a = 5, b = 4;
int result = 1; (why did we assign result here ?)
a=a/2; (why did we divide by 2 for a and b variables ?)
b=b/2;

if (a % 5 == 0 || b % 5 == 0) {
result = 5;
} else if (a % 4 == 0 || b % 4 == 0) {
result = 4;
} else if (a % 3 == 0 || b % 3 == 0) {
result = 3;
} else if (a % 2 == 0 || b % 2 == 0) {
result = 2;
}
System.out.println("Result = " + result);

Answer 1

Consider the following:
int x;
System.out.println(x);
This results in compile error, because we never assigned a value to x, but we try to use it.
This is the explanation for your first question. Creating a variable involves two steps:
- declaration (of type), this is when memory is reserved for the variable
- initialization, when a value is given
These two steps can also happen together on the same line, but not necessarily.

For your next question, the value of a and b are changed, effectively in your code both of them will be 2 (integer division 5/2 result is 2). Why change them? Well someone who wrote the code should be able to explain that :)