What is a program?

What is a program?

A program is a sequence of instructions that specifies how to perform a computation. The computation might be something mathematical, such as solving a system of equations or finding the roots of a polynomial, but it can also be a symbolic computation, such as searching and replacing text in a document or (strangely enough) compiling a program.

There are few basic instructions appear in every programming language:

input: Get data from the keyboard, a file, or some other device.

output: Display data on the screen or send data to a file or other device.

math: Perform basic mathematical operations like addition and multi lication.

conditional execution: Check for certain conditions and x cute the a ro riate code.

repetition: Perform some action repeatedly, usually with some variation.