Please explain '+=' statment

Answer 1

x+=a --> x=x+a
x-=a --> x=x-a
x*=a --> x=x*a
x/=a --> x=x/a
x%=a --> x=x℅a
x^=a --> x=x^a

Answer 2

int x = 4;

x += 4; // Adds 4 to x and assigns that value to x.
// same as:
x = x + 4;

Answer 3

'a += b' is technically equivalent to 'a = a + b'. It's basically a faster way to write code that sums values and adds them to an existing variable.

Answer 4

it is just shorthand of x=x+

Answer 5

a+=b is similar to a=a+b;

Answer 6

x+=1 means x = x + 1

for example 5+=1 means (5 = 5+1) = (5+=1)

simple maths 🙂