What is x +=3

Question

can someone tell me what is the value of x here

Answer 1

it's a short hand techniques
x*=3; //equivalent to x=x*3;
x+=3;//equivalent to x=x+3;

Answer 2

It is a short hand for x=x+3

Answer 3

x = x + 3;
x is 3 more than it was before. += is a short version of that. Same goes to -=, /= and so on

Answer 4

It depends on what x was before.
For example:
// here, x is set to 0
x = 0;
// here, we set x to be x + 3 (0+3 = 3)
x += 3;
x += 3 is the same as x = x + 3. += is just a shorter way to say the same thing.

Answer 5

Short hand for x=x+3; What's on the right-side is stored in the variable x.