• C Programming language Evolution: ALGO->BCPL->B->Tradition C-> K&R C-> ANSI C-> ANSI/ISO C-> C99.
  • The first programming language for the computer was Plankalkul, but C language is seen as the first high-level programming language.
  • Most popular Linux Kernel and most UNIX utilities, what you would call the operating system are written in C, In other words: Kernel of a most popular operating system Linux is written in C.
  • Windows, Linux, Android, Mac, Games all are in C.
  • The languages like Python, PHP etc. they are all developed in C.
  • Top Software/IT Companies Like Google, Facebook, Microsoft, RedHat, Apple, Intel uses C Language for their Drivers/Software.
  • Apple: The operating system is written in C.
  • Windows OS is also written in C Langugae.
  • In C language We can not apply the modulo (%) operator to floating-point values.
  • We can run our program without using header file if we save it with an extension .c in Turbo C++ IDE.