Pointers in C

int *p; p++; adds how many bytes to the p in a 32 bit machine?

• 2

• 4

• 8

• 16

Among & and * which has the higher precedence

• *

• &

• same precedence to both

• None

int x=4, y=7; int *p1, *p2, p1=&x, p2=&y; what is the value of *p1 +* p2?

• 7

• 3

• 47

• 11

A pointer to void can be converted into

• float

• int

• char

• all

assume ptr is pointer to double dimensional array A,then*(ptr+i+j gives

• address of a[i][j]

• value of A[i][j]

• points to a[i][j]

• None

with the statements char *str; str="hello"; which is allowed?

• printf("%s", *str)

• puts(str)

• puts(*str)

• None

int *f1(); indicates the return type of function as

• int pointer

• int

• address of int

• Both a and c

which is not the dynamic memory allocation function?

• free

• malloc

• calloc

• realloc

local variables are stored in

• heap

• stack

• permanent storage area

• none

What is the output of this C code?

#include<stdio.h>

int main()

{

char *p=NULL;

char *q=0;

if (p)

printf("p);

else

printf("nullp");

if(q)

printf("q\n");

else

printf("nullq\n");

}

• nullp nullq

• depends on the compiler

• x nullq where x can be p or nullp depending on the value of NULL

• p q