Pointers

Question

Plz Explain with a diagram .

Comments

It should be B) SIT

Consider,

GATE base address is 100. size of each cell is 1

CSIT base address is 200 size of each cell is 1

2018 base address is 300 size of each cell is 1

s base address is 400 size of each cell is 2

p base address is 500 size of each cell is 2.

ptr value is 500 as it is pointing to p.

**++ptr+1

here * and ++(pre) have higher precedence then +.

ref :- http://www.difranco.net/compsci/C_Operator_Precedence_Table.htm

above expression will be solved as (*(*(++ptr))+1)

++ptr value of ptr = 502.

*502 = 402

*402 = 200

200+1 = 201

Now printf will print value from 201 which is SIT.

Answer 1

Address	Strings
1000	GATE
2000	CSIT
3000	2018

Assume pointer size = 8byte

Char size = 1byte

Elements of Array S	1000	2000	3000
Address	4000	4008	4016

Elements of Array P	4016	4008	4000
Address	5000	5008	5016

p=5000

**++p+1 =**++5000+1 = **5008+1 = *4008+1 = 2000+1 = 2001 

o/p: SIT

Answer 2

**++ptr+1=**(++ptr)+1=**(p+1)+1=*(s+1)+1

*(s+1)=s[1]=CSIT

hence *(s+1)+1=SIT

answer is (B)