Is C++ case sensitive or insensitive?

A case-insensitive string is something else: typedef std::basic_string<char , ci_char_traits<char> > istring , not typedef std::basic_string<char, std::char_traits<char> > string .

From the point of view of the language syntax, you can force certain identifiers to start with a lower or upper case (for instance Java class name). That makes parsing easier, and hence helps keeping the syntax clean.11 Kas 2011

C++ is a case sensitive programming language so, all the keywords must be in lowercase . Case sensitive means that the uppercase and lowercase letters are considered differently.8 Oca 2021

C++ is case sensitive . In other words, uppercase and lowercase letters are considered to be different. A variable named age is different from Age, which is different from AGE. Some compilers allow you to turn case sensitivity off.24 May 2002