Question

what will be the output for the following expression? where a=2 and b=4. (++a) + (++b)=?​

Answer 1

Required Answer:-

Given:

$\dag\ \large\begin{cases}\tt a=2\\ \tt b=4\end{cases}$

To Find:

• The output of the expression - (++a) + (++b)

Solution:

Given,

$\tt >> a=2$

$\tt>>b=4$

So,

$\tt (++a)+(++b)$

$\tt= 3+(++b)\ \ \{a\ becomes\ 3,\:pre-increment\}$

$\tt= 3+5\ \ \{b\ becomes\ 5,\:pre-increment\}$

$\tt = 8$

Hence, the output of the given expression will be - 8.

Answer:

• Output - 8.

Answer 2

Given:

• a=2, b=4

To find:

• ++a + ++b=?

Calculating...

$\large \blue{+ + a \: \: + \: \: + + b }\\ \green{: \implies \: + + 2 \: \: + \: \: + + 4}\\ \orange{: \implies \: 3 \: \: + \: \: 5} \\ \red{: \implies \orange{ \underbrace{\underline{ \: \: \underline{\boxed{ \bold{8}}} \: \:}}}}$

Correct Answer:-

$\large{\orange{: \implies \underbrace{ \overbrace \bold{ \underline{ \boxed{ \underline{ \bold{ \: \: 8 \: \: }}}}}}}}$

Always Remember:-

• ++a or --a is a prefix increment decrement operator respectively which means first increase then move forward.
• a++ or a-- is a postfix increment decrement operator respectively which means first move forward then increase the value.