Pointer in C Language - Quiz

What is the difference between a const pointer and a pointer to a const in C?
  • A A const pointer cannot be dereferenced, while a pointer to a const can
  • B A const pointer cannot be reassigned to point to a different memory location, while a pointer to a const can
  • C A const pointer points to a const object, while a pointer to a const can point to a non-const object
  • D A const pointer and a pointer to a const are equivalent in C

What is a pointer in C?
  • A A data type
  • B A memory address
  • C A keyword
  • D A function

What is the output of this C code? 
    int main()
    {
        int i = 10;
        int *p = &i;
        printf("%d\n", *p++);
    }

  • A Garbage value
  • B 10
  • C 11
  • D Address of i

What will be the output of the following program? 
void main()
{
int const *p = 5;
Printf("%d", ++(*p));
}

  • A 5
  • B 6
  • C Compiler error
  • D Unexpected results

What is a pointer arithmetic in C?
  • A Performing arithmetic operations on the values of pointers
  • B Performing arithmetic operations on the memory addresses stored in pointers
  • C Converting pointers to integers and performing arithmetic operations on them
  • D Converting integers to pointers and performing arithmetic operations on them

What is a double pointer in C?
  • A A pointer that can point to two different memory locations
  • B A pointer that stores a floating-point value
  • C A pointer that points to another pointer
  • D A pointer that can store two integer values

What will be the output of the following program? 
#include"stdio.h" 
char *fun(){
  char *temp = "atnyla";
  return temp; 
}
void main()
{
puts(fun());
}

  • A atnyla
  • B Null Pointer Exception
  • C Compiler error
  • D Unexpected results due to dangling pointers

What is a NULL pointer in C?
  • A A pointer that points to a non-existent memory location
  • B A pointer that has not been initialized
  • C A pointer that points to the first memory location in the system
  • D A pointer that points to the end of the system memory

What is the output of this program? 

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

  • A 0
  • B Compiler Error
  • C 10
  • D Garbage value

What is the difference between a pointer and a reference in C++?
  • A A reference is a type of pointer
  • B A pointer can be reassigned to point to a different memory location, while a reference cannot
  • C A reference must be initialized when it is declared, while a pointer does not have to be
  • D A pointer is a copy of the value it points to, while a reference is an alias for the value it refers to