Incrementing

Question

I'm trying to understand how the math works for this, so i understand that x+=5 is the same as saying x=x +5. my issue is that when i put this into my code and run it, the number it gives me is 3. This is without assigning a value to x. My code just looks like:

int x;
x+=5;
cout << x;

My question is why do I get 3?

Answer 1

you didn't initialize x with any value

so a garbage value was assigned to it

Each time you compile this program you will get a different value for x

so assign some value to x and try again