Unit 4 : Function 2

What is the purpose of the 'main' function in a C program?

• To execute loops

• To define global variables

• To serve as the entry point of the program

• To declare functions

What is the correct way to call a function named 'first'?

• first{}

• call first;

• execute first;

• first();

What is the correct syntax for defining a function in C?

• return_type function_name(parameters) { // body }

• function_name(parameters) { // body }

• function_name return_type(parameters) { // body }

• function_name(parameters) return_type { // body }

What is the difference between function arguments and parameters?

• Arguments are always integers, parameters can be any type

• There is no difference

• Parameters are declared in the definition function, arguments are passed to it

• Arguments are declared in the function, parameters are passed to it

What type of variable can be accessed by all functions in a program?

• Dynamic variable

• Static variable

• Global variable

• Local variable

Determine local variable?

• declare outside the functions

• declare inside the function body

• All function can use

• the variable only can be use inside the function body.

What is a recursive function?

• A function that is defined inside another function

• A function that cannot return a value

• A function that calls itself

• A function that calls another function

What will be the output for the following programming code:

#include <stdio.h>

display(int n);

int main() {

display(3);

return 0;

}

display(int n){

printf("%d ", n);

if(n <= 1)

{

return;

}

display(n - 1);

}

• 1

• 123

• 321

• 1122