A pointer is

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A pointer is

A keyword used to create variables

A variable that stores address of an instruction

A variable that stores address of other variable

All of the above

Answer : C

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1) Can you combine the following two statements into one?

   char *p; 
   p = (char*) malloc(100);

char p = *malloc(100);

char *p = (char) malloc(100);

char *p = (char*)malloc(100);

char *p = (char *)(malloc*)(100);

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2) What will be the output of the following C code?

 #include <stdio.h>
 int x = 0;
 void main()
 {
     int *const ptr = &x;
     printf("%p\n", ptr);
     ptr++;
     printf("%p\n ", ptr);
 }

0 1

Compile time error

0xbfd605e8 0xbfd605ec

0xbfd605e8 0xbfd605e8

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3) What will be the output of the program ?

 #include<stdio.h>
 int main()
 {
     static char *s[] = {"black", "white", "pink", "violet"};
     char **ptr[] = {s+3, s+2, s+1, s}, ***p;
     p = ptr;
     ++p;
     printf("%s", **p+1);
     return 0;
 }

ink

ack

ite

let

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4) Comment on the following C statement.

  const int *ptr;

You cannot change the value pointed by ptr

You cannot change the pointer ptr itself

You May or may not change the value pointed by ptr

You can change the pointer as well as the value pointed by it

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5) What will be the output of the following C code?

 #include <stdio.h>
 void main()
 {
     int x = 0;
     int *ptr = &x;
     printf("%d\n", *ptr);
 }

Address of x

Junk value

0

Run time error

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A pointer is

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