Question

What is routine in principle of programming language?

Answer 1

In computer programming, routine and subroutine are general and nearly synonymous terms for any sequence of code that is intended to be called and used repeatedly during the executableof a program. This makes the program shorter and easier to write (and also to read when necessary). The main sequence of logic in a program can branch off to a common routine when necessary. When finished, the routine branches back to the next sequential instruction following the instruction that branched to it. A routine may also be useful in more than one program and save other programmers from having to write code than can be shared.