output of program

Question

Predict the output of following code segment:
 

#include<iostream.h>
Void main ( )
{
int x { } = {1,2,3,4,5};
int *p,**q,*t;
p=x;
cout<<*p;
t=x+2;
q=&t;
cout<<*++p <<**q <<**q <<*t;}

(a) 1233 (b) 1223 (d) 1234 (d) 2345

Comments

C++ is not in GATE syllabus.

Answer 1

Ans will be 12333

p=x Here p is holding the address of to 1st element of x.

Now, p is printing 1st element of x, i.e. 1

t=x+2;

Here t is holding address of x+$2\times size of int$=2000+$2\times4$=2008, i.e. addess of 3

q is a pointer that holding address of t.

So, q pointing same element as t

Now, p is preincremented, so it increment the address by 4 Bytes.

So, value pointed by p is 2
q and t already pointing to address of 3

So, output 12333