Java "I'm a function too!" In this tutorial, we shall cover such functions without argument and return value in C++. How to return and pass object as function argument? When function does not take any value as an argument and does not return any value. Note that the last-1 in the range() function indicate that the function is . Next is int main(). if (typeof window.onload != 'function') { Solved programs: When to use func _ get _ ARGs as parameter in PHP? A function in Python is defined with the def keyword. Now check the value in a variable @isPresent using the select statement. Looks at a program that calls and defines a Python function with no arguments and no return value. In the above example, notice that it did not return any value or expression, it just prints out the welcome statement.