The first week of C language learning - the history of C language

interpretative language VS Compiled language

• There is no distinction between interpretation and compilation , Are commonly used execution methods
• Any language can interpret execution or compile execution
• Interpretive languages have special computing power
• Compiled languages have definite operational properties
  P.S. C Languages are more used for compilation and execution

C The history of language

C Language by B Language comes ,B Language is from BCPL Come and go , and BCPL It's from FORTRON Developed .
FORTRON It is the first high-level programming language in human history , Invented in 20 century 50 years .
BCPL And B All support The pointer is indirect , therefore C Also support The pointer is indirect .
meanwhile C Language has also been PL/I Influence , And also PDP-11 Machine language has a lot to do with .
1973 year 3 month , The third edition of Unix There is C Compiler of language .
1973 year 11 month , The fourth edition of Unix（System Four） Released , This version uses C The language is rewritten .
1989 year ANSI Issued a standard ——ANSI C
1990 year ISO To accept the ANSI Standards for ——C89
1995 And 1999 Years of C Has been updated , Respectively C95 And C99

The pointer yes C The soul of language .

C The use of language

• operating system
• Embedded system
• The driver
• Bottom drive
• Graphics engine 、 The image processing 、 Sound effects