Question

please solve this above question ​

Answer 1

$\texttt{\textsf{\large{\underline{Question 1}:}}}$

Given:

> x = 5

• We have to evaluate the given expression and find the value of x.

> x = x++ * 2 + 3 * --x

> x = 5 * 2 + 3 * --x (x remains 5, post-increment)

> x = 5 * 2 + 3 * --x (x becomes 6)

> x = 5 * 2 + 3 * 5 (x becomes 5, pre-decrement)

> x = 10 + 15

> x = 25

So, the final value of x is 25. (Answer)

$\texttt{\textsf{\large{\underline{Question 2}:}}}$

Given:

> a = 2

> b = 3

• We have to evaluate the given expression and find out the value of x.

> x = a++ + ((++b) / 2)

> x = 2 + ((++b) / 2) (a remains 2, post-increment)

> x = 2 + ((++b) / 2) (a becomes 3)

> x = 2 + (4 / 2) (b becomes 4, pre-increment)

> x = 2 + 2 (integer division, quotient is obtained)

> x = 4

So, the final value of x is 4. (Answer)

$\texttt{\textsf{\large{\underline{Learn More}:}}}$

There are two types of increment/decrement operations.

1. Post increment/decrement.
2. Pre increment/decrement.

Post Increment/Decrement: Here, operation takes place first and then the value is incremented/decremented.

Example:

> int a = 2;

> int b = a++;

> b = 2

Now, a = 3.

Pre Increment/Decrement: Here, value is first increment/decrement and then the operation is carried out.

Example:

> int a = 2;

> int b = ++a;

> b = 3

Also, a = 3