1.Create and call a simple function
Write a program with a function that prints “Hello, World!” when called from main().

2.Function to add two numbers
Write a function that takes two numbers as arguments and returns their sum.

3.Function to find the maximum of three numbers
Write a function that takes three numbers as arguments and returns the largest.

4.Check if a number is even or odd using a function
Write a function that checks whether a number is even or odd.

5.Factorial using a function
Write a function that calculates the factorial of a number and returns it.

6.Check if a number is prime using a function
Write a function that checks if the given number is a prime number.

7.Swap two numbers using a function
Write a function to swap two values using call by reference.

8.Fibonacci series using a function
Write a function that prints the Fibonacci series up to N terms.

9.Recursive function to find power
Write a recursive function to calculate the power of a number (e.g., a^b).

10.Recursive function for factorial
Write a recursive function to calculate the factorial of a number.