Functions and Procedures in C++ MCQ question and answer with solution

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Each section contains 100 MCQs on Functions and Procedures in C plus plus .

Which of the following is a valid function declaration in C++?

A) sum(int a, int b) { return a + b; } B) sum(int, int) { return a + b; } C) sum(a, b) { return a + b; } D) int sum(int a, int b);

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What is the purpose of function overloading in C++?

A) Allows multiple functions with the same name but different parameters B) Improves the efficiency of the functions C) Ensures that functions can be called from anywhere D) Facilitates the declaration of global variables

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What does the 'inline' keyword do in C++ function declaration?

A) Indicates that the function should be ignored B) Declares that the function should be inlined C) Specifies that the function should be called inline D) Suggests the compiler to replace the function call with its definition

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What is the output of the following code: int max(int a, int b) { return (a > b) ? a : b; } int main() { cout << max(5, 5); } in C++?

A) 10 B) 0 C) 5 D) Compilation error due to ambiguous function call

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In C++, how are function arguments passed by default?

A) By pointer B) By value C) By address D) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

What is the purpose of the 'static' keyword in a function declaration in C++?

A) It allows a function to be accessed from other files B) It restricts the scope of the function C) It indicates that the function is a member function D) It allocates memory for the function

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

What is the syntax for defining a recursive function in C++?

A) returnType functionName(parameters) { if (condition) functionName(parameters); } B) functionName(parameters) { returnType if (condition) functionName(parameters); } C) functionName(parameters) { functionName(parameters); } D) returnType functionName(parameters) { functionName(parameters); }

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What will be the output of the following code: int add(int x, int y) { return x + y; } int main() { cout << add(2); } in C++?

A) Compilation error due to missing return statement B) 0 C) Compilation error due to missing argument D) 2

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

What is the purpose of the 'extern' keyword in a function declaration in C++?

A) It declares the function as an external function B) It ensures that the function is not inlined C) It makes the function visible only within the file D) It specifies that the function is defined elsewhere

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What is the correct way to pass an array to a function in C++?

A) By declaring the array globally and accessing it directly B) By passing the array index as a parameter C) By passing the array name and size as parameters D) By passing each array element as a parameter

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Functions and Procedures in C++ MCQ question and answer with solution | C++ Programimg MCQs