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Quiz on C++ Functions
Question 1
Which of the following is the correct syntax for a function declaration?
int function();
function int();
int function{};
int function[];
Question 2
What is the default return type if it is not specified in the function definition?
char
void
float
int
Question 3
What is the output of the below program?
void display() {
cout << "Hello, World!";
}
int main()
{
display();
return 0;
}
Hello
World
Hello, World!
Error
Question 4
What does the return statement do in a function?
Ends the function
Passes control back to the caller
Returns a value to the caller
All of the above
Question 5
What keyword is used to declare a function that does not return a value?
int
float
void
return
Question 6
In the following function declaration, how many formal parameters are there?
double calculate(double value1, double value2);
1
2
0
2 actual parameters
Question 7
Which of the following is used to define a function outside of a class declaration?
::
.
->
*
Question 8
Which among the following correctly explains a function prototype?
The actual body of the function
The first line of the function definition
A declaration of the function that specifies the function’s name, return type, and parameters
A dummy function
Question 9
What is the output of the below function with default arguments?
int add(int a, int b = 3) {
return a + b;
}
int main()
{
cout << add(2);
return 0;
}
function with default arguments?
2
5
3
Error
Question 10
Which among the following best describes the function overloading?
Defining multiple functions with the same name but different parameters
Defining multiple functions with different names and parameters
Using the same function name for different return types
Defining multiple functions with the same name and parameters
There are 25 questions to complete.