In-Place Operators

Question

x = 2
x += 3
x += 4
x += 5
x += (x+x)
print(x)

output = 42

Why?

Answer 1

Sean Lim

1. x = 2
2. x += 3 ( x = 5 )
By this statement it simply means that (x = x + 3). Previous Value of x is 2 .
It evalute as ( x = 2 + 3 ) that's why x = 5

3. x += 4 => ( x = 9 )
Previous value of x is 5 and 4 is added which becomes 9.

4. x += 5 => ( x = 14 )
5 is added to its previous value 9.

5. x += ( x+x ) => x = 14 + ( 14+ 14)
That's why 42 is assign to x.
And output is x = 42.

Answer 2

X =2..5..9..14
And finally(14 + 2*14)=42

Answer 3

Thanks everybody, you guys/gals are amazing.

I missed out on the part where I had to add the 14 to (14+14).