C (musical note) - Wikipedia
https://en.wikipedia.org/wiki/C_(musical_note)C or Do is the first note of the C major scale, the third note of the A minor scale (the relative minor of C major), and the fourth note (G, A, B, C) of the Guidonian hand, commonly pitched around 261.63 Hz.The actual frequency has depended on historical pitch standards, and for transposing instruments a distinction is made between written and sounding or concert pitch.
Ç - Wikipedia
https://en.wikipedia.org/wiki/ÇÇ or ç (C-cedilla) is a Latin script letter, used in the Albanian, Azerbaijani, Manx, Tatar, Turkish, Turkmen, Kurdish, Zazaki, and Romance alphabets. Romance languages that use this letter include Catalan, French, Friulian, Ligurian, Occitan, and Portuguese as a variant of the letter C with a cedilla. It is also occasionally used in Crimean Tatar and in Tajik(when written in the Latin script) to represent …
Ç – Wikipedia
https://no.wikipedia.org/wiki/ÇÇ (C med cedille) brukes i katalansk, fransk og portugisisk, men anses ikke for å være en egen bokstav i disse språkene. Ç benyttes vanligvis til å angi at c-en skal uttales som /s/, foran a, o eller u, hvor den ellers skulle uttales som /k/. Ç anses ikke for å være en egen bokstav, men alfabetiseres som c.. På tyrkisk, og andre tyrkiske språk som har innført det tyrkiske alfabetet ...
C Tutorial
www.tutorialspoint.com › cprogramming › indexC was initially used for system development work, particularly the programs that make-up the operating system. C was adopted as a system development language because it produces code that runs nearly as fast as the code written in assembly language. Some examples of the use of C are - Operating Systems Language Compilers Assemblers Text Editors