Question

if y=3 x=(y++)+(++y)*2+(++y)+y

Answer 1

x=(y++)+(++y)*2+(++y)+y

Y++ =it use current value 3 then change it to 4.now current value of y is 4.

++y it change the current value that is now 4 to 5, then it use 5. now current value of y is 6.

Again

++y it change the current value that is now 5 to 6, then it use 6.

now current value of y is 4.

On putting value we get,

X= 3 + 5 *2 + 6 +6

X= 3+10+12

X = 25

Explantion.

Y++ is an postfix increment operator. Its rule is use then change means it use the current value then it add +1 to current value.

++y is prefix operator, it change then use means firstly it change( add +1)the value then use the changed value.