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.
For example, Amazon.com released its API so that Web site developers could more easily access Amazon's product information. Using the Amazon API, a third party Web site can post direct links to Amazon products with updated prices and an option to buy now..An API is a software-to-software interface, not a user interface. With APIs, applications talk to each other without any user knowledge or intervention.ith a conferencing API, that same on-demand service can be integrated into another Web-based software application, like an instant messaging program or a Web calendar. The user can schedule a Web conference in his Web calendar program and then click a link within the same program to launch the conference.