Introduction To C Plus Plus — Part 2 MCQs with Explanations

class Rectangle { private: int length, width; } is the correct answer to “What is the correct syntax to define a class named 'Rectangle' with private member variables 'length' and 'width' in C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Exit the loop is the correct answer to “What is the purpose of the 'break' statement in a loop in C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

const double PI = 3.14159 is the correct answer to “What is the correct way to define a constant named 'PI' with a value of 3.14159 in C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

1 is the correct answer to “What is the output of the following code: cout << (10 % 3); in C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Output in C is 4 and in C++ is 1 is the correct answer to “What will be the output of the following program in both C and C++? #include<stdio.h> int main(int argc, char const *argv[]) { printf("%d\n", (int)sizeof('a')); return 0; }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

It will not have a destructor is the correct answer to “What happens if a class does not have a name”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

\r is the correct answer to “Which of the following escape sequence represents carriage return”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Parameters which are used in the definition of the function is the correct answer to “What are the formal parameters in C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

All of the mentioned is the correct answer to “Which of the following is a static polymorphism mechanism”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Error in C but not in C++ is the correct answer to “What if we define the below structure in C and C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Neither I nor II is the correct answer to “Which of the following is true? I. All operators in C++ can be overloaded. II. The basic meaning of an operator can be changed.”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

std is a standard namespace in C++ is the correct answer to “What is std in C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

The process of linking the actual code with a procedural call during run-time is the correct answer to “What is dynamic binding”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Error in C++ and successful execution in C is the correct answer to “What happens if the following line is executed in C and C++? const int a;”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

The program gives an error in case of C but runs perfectly in case of C++ is the correct answer to “What happens if we run the following code in both C and C++? #include<stdio.h> struct STRUCT { int a = 5; int func() { printf("%d\n", a); } }; int main() { struct STRUCT s; s.func(); return 0; }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Nothing is printed is the correct answer to “What will be the output of the following C++ code? #include<iostream> using namespace std; class A { ~A(){ cout<<"Destructor called\n"; } }; int main() { A *a1 = new A(); A *a2 = new A(); return 0; }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

>> is the correct answer to “Which of the following is called extraction/get from operator”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

& is the correct answer to “Which of the following is called address operator”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

The process of adding more information to a function name so that it can be distinguished from other functions by the compiler is the correct answer to “What is name mangling in C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

1 bit is the correct answer to “What is the size of a boolean variable in C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

4 and 1 is the correct answer to “What is the size of a character literal in C and C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

struct cannot have member function in C but it can in C++ is the correct answer to “Which of the following is correct”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Error is the correct answer to “What will be the output of the following C++ code? #include<iostream> using namespace std; class A { ~A(){ cout<<"Destructor called\n"; } }; int main() { A a; return 0; }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

To access the members of a class which have the same name as local variables in that scope is the correct answer to “Why this pointer is used”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Static data members functions can access only static data members is the correct answer to “Which of the following is correct about static variables”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

namespace::member is the correct answer to “Which of the following syntax can be used to use a member of a namespace without including that namespace”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Bjarne Stroustrup is the correct answer to “Who created C++”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

In static polymorphism, the conflict between the function call is resolved during the compile time is the correct answer to “Which of the following is correct about static polymorphism”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

:: is the correct answer to “Which of the following is the scope resolution operator”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Error in C++ and successful execution in C is the correct answer to “What happens if the following program is executed in C and C++? #include <stdio.h> void main() { printf("Hello World"); }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

both while and for is the correct answer to “Which of the following is an entry-controlled loop”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

9 is the correct answer to “What will be the output of the following C++ code? #include <iostream> int const s=9; int main() { std::cout << s; return 0; }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Virtual functions is the correct answer to “Which concept is used to implement late binding”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Constructors is the correct answer to “Which of the following cannot be used with the virtual keyword”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Error in C++ and successful execution in C is the correct answer to “What happens if the following program is executed in C and C++? #include <stdio.h> int main(void) { int new = 5; printf("%d", new); }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

do-while is the correct answer to “Which of the following is an exit-controlled loop”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

0 5 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; class Test { static int x; public: Test() { x++; } static int getX() {return x;} }; int Test::x = 0; int main() { cout << Test::getX() << " "; Test t[5]; cout << Test::getX(); }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

Error in C++ but Warning in C is the correct answer to “What happens if the following program is executed in C and C++? #include<stdio.h> int main() { foo(); } int foo() { printf("Hello"); return 0; }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

cin is the correct answer to “Which of the following is C++ equivalent for scanf()”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.

1 is the correct answer to “What will be the output of the following C++ code? #include<iostream> using namespace std; int x = 1; int main() { int x = 2; { int x = 3; cout << ::x << endl; } return 0; }”. This question is standard in competitive examination syllabi for Introduction To C Plus Plus.