Suppose a b and c are part of the same program If a10 b5 and

Suppose, a, b and c are part of the same program. If a=10, b=5 and c=1. Y= (a++) + (--b) + (c--). Z= ++Y. What are the values of Z, a, b and c? (5 points)

a) Z=15, a=11, b=4, c=0.

b)Z=16, a=11, b=4, c=0.

c)Z=15, a= 10, b=4, c=1.

d)Z=16, a=10, b=4, c=1

Solution

a=10, b=5 and c=1

Pre incrementation : ++a

a=10;

cout<<++a; // It prints 11

cout<<a; // It prints 11

Here first of all incrementation of value of a then prints the result.

Post incrementation : a++

a=10;

cout<<a++; // It prints 10

cout<<a; // It prints 11

Here first of all prints the the value of a without incremantation, after print the value it increments the value of a.

Y= (a++) + (--b) + (c--)

Here

Y= 10+4+1=15;

Now the post incrementation and post decrementation values changed as

a=11 and c=0

Z= ++Y; // Since pre incrementation the value of y is incremented so y=16 and assigned to z therefore z=16.

b) Z=16, a=11, b=4, c=0.

Option b is correct choice.