Pointers And References In C Plus Plus — Part 1 MCQs with Explanations

A variable that stores the address of another variable is the correct answer to “What is a pointer in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

type *ptr is the correct answer to “How do you declare a pointer variable in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

5 is the correct answer to “What is the output of the following code: int x = 5; int *ptr = &x; cout << *ptr; in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

*ptr is the correct answer to “What is the correct syntax to dereference a pointer in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Represents a null pointer is the correct answer to “What is the purpose of the 'nullptr' keyword in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

NULL pointer is the correct answer to “What does the 'nullptr' keyword replace in C++11 and later versions”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Alias to an existing variable is the correct answer to “What is the purpose of the 'reference' in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

5 is the correct answer to “What is the output of the following code: int x = 5; int &ref = x; cout << ref; in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Compilation error is the correct answer to “What happens when a reference is declared but not initialized in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

type &ref is the correct answer to “How do you declare a reference variable in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Represents that the pointer does not point to a valid object is the correct answer to “What is the purpose of a null pointer in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

2 is the correct answer to “What is the output of the following code: int arr[3] = {1, 2, 3}; int *ptr = arr; cout << *(ptr + 1); in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

A pointer that points to a deallocated memory is the correct answer to “What is a dangling pointer in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

& is the correct answer to “What is the address-of operator in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

1 is the correct answer to “What is the output of the following code: int arr[] = {1, 2, 3}; cout << *arr; in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

int *const ptr is the correct answer to “How do you declare a constant pointer to an integer variable in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Double pointer is the correct answer to “What is a pointer to a pointer known as in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Allocates memory dynamically is the correct answer to “What does the 'new' keyword do in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

A reference that doesn't refer to any object is the correct answer to “What is a null reference in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

10 Address of x is the correct answer to “What is the output of the following code: int x = 10; int *ptr = &x; cout << *ptr << " " << ptr; in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

By reference is the correct answer to “What is the correct way to pass a pointer to a function in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Failure to deallocate memory after it's no longer needed is the correct answer to “What is a memory leak in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Deallocates memory dynamically is the correct answer to “What is the purpose of the 'delete' keyword in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

A null pointer is the correct answer to “What does the 'nullptr' keyword signify when used as a pointer value in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Performing arithmetic operations on pointers is the correct answer to “What is a pointer arithmetic in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Points to the current object instance is the correct answer to “What is the purpose of the 'this' pointer in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Size of the data type pointed to by the pointer is the correct answer to “What does the 'sizeof' operator return when used with a pointer variable in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Indicates that the value pointed to is constant is the correct answer to “What is the purpose of the 'const' keyword in a pointer declaration in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

3 is the correct answer to “What is the output of the following code: int arr[3] = {1, 2, 3}; cout << *(arr + 2); in C++”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Error is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int const p = 5; cout << ++p; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

pointer arithmetic is the correct answer to “What we can't do on a void pointer”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

x is a pointer to a string, y is a string is the correct answer to “Choose the right option. string* x, y;”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

4 is the correct answer to “What is size of generic pointer in C++ (in 32-bit platform)”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

5 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int n = 5; void *p = &n; int *pi = static_cast<int*>(p); cout << *pi << endl; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

5 is the correct answer to “What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; int main(int argc, char const *argv[]) { int a = 5; int &p = a; cout<<p; return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

int **fun(float*, char**) is the correct answer to “The correct statement for a function that takes pointer to a float, a pointer to a pointer to a char and returns a pointer to a pointer to a integer is . . . . . . . .”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Hello world is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; void print (char * a) { cout << a << endl; } int main () { const char * a = "Hello world"; print(const_cast (a) ); return 0; }”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

A reference value once defined can be reassigned is the correct answer to “Identify the incorrect statement.”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

Copy Constructor is the correct answer to “Which of the following function must use reference.”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.

both const keyword and #define preprocessor is the correct answer to “How are the constants declared”. This question is standard in competitive examination syllabi for Pointers And References In C Plus Plus.