Evaluate the following if the value of x = 7, y = 5 x += x++ + x + ++y;

x = 28

Expand the shorthand: x += ... means x = x + (...). The x on the left of the + is read first, while x is still 7. Then the bracket, left to right: x++ : postfix, so 7 is used and then x becomes 8 x : now 8, so 8 is used ++y : prefix, so y becomes 6 and 6 is used total = 7 + 8 + 6 = 21 Finally x = 7 + 21 = 28. Write the running value of each variable beside every term as you go — that habit alone answers every question of this type.