Is program code case-sensitive?

Almost of program languages these day are case-sensitive . When you writing source code, if your language expect some words to be all lowercase, then you should always write all lowercase. If you write the other way, compiler or interpreter will not understand that word and resulting as error.

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What is case-insensitive example?

In computers, case sensitivity defines whether uppercase and lowercase letters are treated as distinct (case-sensitive) or equivalent (case-insensitive). For instance, when users interested in learning about dogs search an e-book, “dog” and “Dog” are of the same significance to them .

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