A pointer is

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

 #include <stdio.h>
 int main()
 {
    int i = 10;
    void *p = &i;
    printf("%d\n", (int)*p);
    return 0;
 }

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

3) 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);

4) The operator used to get value at address stored in a pointer variable is

*

&

&&

||

5) 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