Natural Numbers can mean either Counting Numbers {1, 2, 3, ...}, or Whole Numbers {0, 1, 2, 3, ...}, depending on the subject. Integers. Integers are like whole numbers, but they also include negative numbers... but still no fractions allowed! So, integers can be negative {-1, -2,-3, -4, -5, ... }, positive {1, 2, 3, 4, 5, ... }, or zero {0} We can put that all together like this: Integers = { ..., -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, ...
An application-programming interface (API) is a set of programming instructions and standards for accessing a Web-based software application or Web tool. A software company releases its API to the public so that other software developers can design products that are powered by its service. For example, Amazon.com released its API so that Web site developers could more easily access Amazon's product information.
Stands for Application Programming Interface. An API is a set of commands, functions, protocols, and objects that programmers can use to create software or interact with an external system. It provides developers with standard commands for performing common operations so they do not have to write the code from scratch.