A great example of a web API is like ordering food online. Imagine you're using a restaurant's website or app to order your favorite meal. You don't need to know how their kitchen works; you just select the dishes you want and send your order. The restaurant's kitchen is like a server, and the menu and order buttons on the website are like the API.
In this case, the website's API lets you interact with the restaurant's systems without knowing all the behind-the-scenes details. Similarly, in programming, a web API lets different software systems (like apps or websites) communicate and exchange information without needing to understand all the technical stuff happening in the background.