printHello

PrintHello is a conventional name used in programming tutorials for a simple function that outputs the greeting "Hello" to the standard output. It is not a formal language feature but a pattern that helps introduce basic concepts such as defining a function, calling it, and performing console or stdout output.

In Python, a typical example is:

def printHello(): print("Hello")

In JavaScript:

function printHello() { console.log("Hello"); }

In Java:

public static void printHello() { System.out.println("Hello"); }

In C:

void printHello() { printf("Hello\n"); }

In C++:

void printHello() { std::cout << "Hello" << std::endl; }

The primary behavior is to display the string Hello to the program’s output stream. Most versions have no meaningful return value beyond signaling the function’s completion, though some languages allow or encourage returning a status code or the printed string for testing.

PrintHello is commonly used to illustrate fundamental programming concepts such as function declaration, scope, and basic I/O. It often appears in introductory lessons as a stepping stone to more complex examples, such as printing dynamic content, handling user input, or integrating with libraries and modules.

See also: Hello, World!, print statements, standard output.