C++ Functions and Arrays Quiz

Why do we use functions in a program?

• To organize code and reduce redundancy

• To make the program longer

• To increase memory usage

• To make debugging harder

What type of function is provided by the C++ library?

• Custom

• Built-in

• Manual

• User-defined

What is the correct term for data sent to a function?

• Conditions

• Arguments

• Parameters

• Pointers

What does the return type in a function indicate?

• Code inside the function

• Number of arguments

• How many times the function runs

• Type of value the function return

What is the correct order of a function definition?

• returnType, functionName, parameters

• functionName, returnType, parameters

• returnType, parameters, functionName

• parameters, returnType, functionName

Which of the following is a built-in C++ function?

• sqrt()

• calculateTotal()

• add_numbers()

• runProgram()

What will be the output of this code?

int square(int x) { return x * x; }

int main() { cout << square(3); }

• 6

• 3

• 9

• Error

Predict the result:

void update(int &x) { x += 5; }

int main() {

int num = 10;

update(num);

cout << num;

}

• Error

• 10

• 15

• 5

What is an array in programming?

• An ordered collection of elements

• A random group of values

• A type of function

• A loop that repeats

What type of arrays does C++ support?

• Dynamic only

• Mixed-type

• Heterogeneous

• Homogeneous