Functions And Procedures In C Plus Plus — Part 1 MCQs with Explanations

The given code defines a function named square which takes an integer x as input and returns the square of x . In the main function, square(3) returns 9 and square(2) returns 4 . When these values are added together and printed, the output will be 9 + 4 = 13 .

The given code defines a function named max which takes two integers a and b as input and returns the maximum of the two. In the main function, max(5, 3) is called, but it is directly printed to the output without any calculation. Therefore, the output will be max(5, 3) , representing the function call.

returnType functionName(parameters) { body; } is the correct answer to “What is the correct syntax for defining a function in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Declares the function before it is defined is the correct answer to “What is the purpose of a function prototype in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

void is the correct answer to “Which keyword is used to define a function in C++ that does not return any value”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

add(int a, int b) is the correct answer to “What is the correct way to call a function named "add" that takes two parameters in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Returns a value from the function is the correct answer to “What does the 'return' statement do in a function in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

8 is the correct answer to “What is the output of the following code: int sum(int a, int b) { return a + b; } cout << sum(3, 5); in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Multiple functions can have the same name with different parameters is the correct answer to “Which of the following is true about function overloading in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Allows a function to be called without providing all arguments is the correct answer to “What is the purpose of default arguments in C++ functions”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

returnType functionName(parameters) is the correct answer to “What is the correct syntax for declaring a function prototype in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Allows changes made to the arguments to reflect outside the function is the correct answer to “What is the purpose of passing arguments by reference in C++ functions”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

returnType functionName(parameters) { functionName(parameters); } is the correct answer to “What is the correct syntax for defining a recursive function in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Declares the name, return type, and parameters of the function is the correct answer to “What is the purpose of a function header in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

A function calling itself directly or indirectly is the correct answer to “Which of the following is true about function recursion in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

To perform a specific task is the correct answer to “What is the purpose of a function in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

They are variables used to pass data into functions is the correct answer to “Which of the following is true about function parameters in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

int functionName() is the correct answer to “What is the correct way to declare a function in C++ that takes no parameters and returns an integer”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Indicates that the function does not return a value is the correct answer to “What is the purpose of the 'void' keyword in a function declaration in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

12 is the correct answer to “What is the output of the following code: int multiply(int x, int y) { return x * y; } int main() { cout << multiply(3, 4); } in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

int sum(int a, int b) is the correct answer to “Which of the following is a valid function declaration in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Allows multiple functions with the same name but different parameters is the correct answer to “What is the purpose of function overloading in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Suggests the compiler to replace the function call with its definition is the correct answer to “What does the 'inline' keyword do in C++ function declaration”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

5 is the correct answer to “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++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

By value is the correct answer to “In C++, how are function arguments passed by default”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

It restricts the scope of the function is the correct answer to “What is the purpose of the 'static' keyword in a function declaration in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

returnType functionName(parameters) { functionName(parameters); } is the correct answer to “What is the syntax for defining a recursive function in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Compilation error due to missing argument is the correct answer to “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++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

It specifies that the function is defined elsewhere is the correct answer to “What is the purpose of the 'extern' keyword in a function declaration in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

By passing the array name and size as parameters is the correct answer to “What is the correct way to pass an array to a function in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Retains the variable's value between function calls is the correct answer to “What is the purpose of the 'static' keyword in a C++ function”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Indicates that the function does not return any value is the correct answer to “What does the 'void' keyword represent in the function declaration in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

The compiler replaces the function call with the function code wherever it is called is the correct answer to “Which of the following is true about inline functions in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

8 is the correct answer to “What is the output of the following code: int add(int a, int b) { return a + b; } int sum = add(3, 5); cout << sum; in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

The compiler automatically deduces the return type based on the return statement is the correct answer to “In C++, what is the significance of the function return type 'auto'”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

It grants access to private and protected members of a class to the function is the correct answer to “What is the purpose of the 'friend' keyword in a C++ function declaration”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

returnType functionName(...) is the correct answer to “What is the syntax for declaring a function that takes a variable number of arguments in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Before: 5 After: 5 is the correct answer to “What is the output of the following code: int x = 5; cout << "Before: " << x; changeValue(x); cout << "After: " << x; in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

template returnType functionName(T parameter) { body; } is the correct answer to “What is the correct syntax for defining a function template in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.

Indicates that the parameter value cannot be changed within the function is the correct answer to “What is the purpose of the 'const' keyword in a function parameter list in C++”. This question is standard in competitive examination syllabi for Functions And Procedures In C Plus Plus.