More Assignment Operators

The operators +, -, *, /, (and others) can be can be used with = to make a combined operator For example, The following adds 5 to sum:

sum += 5;    // add 5 to sum

This statement has the same effect as:

sum = sum + 5;    // add 5 to sum

Here is a shortened list of these combined operators:

Operator	Operation	Example	Effect
=	assignment	sum = 5;	sum=5;
+=	addition with assignment	sum += 5;	sum= sum + 5;
-=	subtraction with assignment	sum -= 5;	sum= sum - 5;
*=	multiplication with assignment	sum *= 5;	sum= sum * 5;
/=	division with assignment	sum /= 5;	sum= sum/5

When these operators work, the complete expression on the right of the "=" is evaluated before the operation that is part of the "=" is performed. Here is a program fragment:

double w = 12.5 ;
double x =  3.0;

w *= x-1 ;
x -= 1 + 1;

System.out.println( " w is " + w + " x is " + x );

QUESTION 9:

What does this program fragment write out?

Click Here after you have answered the question