An infinite loop — sometimes called an endless loop — is a piece of code that lacks a functional exit so that it repeats indefinitely.

An infinite loop is a loop that never ends or terminates and continues eternally. In other terms, an infinite loop is one in which the test condition does not evaluate to false and the loop runs indefinitely until terminated by an external force. The statement within a loop’s body must ensure that the loop’s test condition finally becomes false; otherwise, the loop will run indefinitely. As a result, a loop that never ends is referred to as an infinite loop.