pointers and structures

Question

what will be output printed?

Answer 1

  

$st[0] = { \{10 , "Bombay"\}} $

$st[1] = { \{11 , "Computer"\}}$

$st[2] = { \{12 , "Science"\}}$

$st[3] = {\{13 , "Engineering"\}}$

$st[4] = {\{14 , "GateCS"\}}$

$st[5] = {\{15 , "2018"\}}$

$e++->ch$   will give  $st[0].ch$  $\rightarrow$ $Bombay$

$e$ is incremented, now it will point to $st[1]$

$++e$ $\rightarrow$  $e$ is incremented, now it will point to $st[2]$

$++e->ch$ : it will print $cience$

Reason:

$->$ has higher precedence then $++$, so $->$ will be executed first

$e->ch$ will be executed first and will give $Science$

$++(Science)$: move 1 position to the right and point to c and will give output $cience$

$++e++->ch$  will  $ience$

$Reason:$

$->$ has higher precedence then $++$, so $->$ will be executed first

$e++->ch$ will give means $cience$

$++(cience)$ will be incremented and it will be pointing to $i$ and will give  $ience$ 

$e$ is incremented, now it will point to $st[3]$

$e[0].a$  will give $st[3].a$ $\rightarrow$ $13$

$++e->ch$   will give $ngineering$

$Reason:$ 

$->$ has higher precedence then $++$, so $->$ will be executed first

$e->ch$ will give $Engineering$

$++e->ch$  it is increment will point to $n$ of $Engineering$

Comments

pankaj sir please explain the 2nd and third printf statement

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@ Shivani gaikawad :

++e->ch

we know -> has higher precedence than ++, so it will be executed first

it can be written as ++(e->ch) 

e->ch will give Science ( as the pointer is incremented 2 times before )

++(Science): it is incremented and will point to c

++e++->ch

again -> has higher precedence than ++

this can be written as ++(e++->ch), in the bracket we see post-increment, so first, it will assign the value then increment

++(cience), it is incremented by 1 position and now it will point to i 

Now due to post-increment, it will go to the next location

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thnxx @pankaj

Answer 2

Can you please verify the answer once : -

I got answer as :-

Bombay Engineering ngineering 14 2018

Answer 3

Answer is given as->

Bombay ,cience,ience,13,ngineering