Crazy guy c Study Notes (1)

Machine language (binary computer commands) is the only language that can be recognized by computers. Common Words: operation code and operations

Assembly Language -- (assembly) --> machine language. Common Words: add and move, address, symbol language, constant is hexadecimal, data segment, code segment

Advanced Language -- (compile) --> machine language. Common Words: source code, source code, and executable files

C78 (traditional C), December 1978

Ansi c, 1983

C89 (C90), December 1990

C99

Token, word. In C, there are five types of words: keywords, identifiers, constants, string texts, and punctuation marks.

Print two patterns:

# Include <stdio. h> # include <stdlib. h> void F1 () {printf ("/\ n "); printf ("// \ n"); printf ("// \ n"); printf ("---------- \ n");} void F2 () {printf ("\ % \ % \ n "); printf ("\ % \ n"); printf ("\ % \ n "); printf ("\ % \ % \ n ");} int main () {F1 (); F2 ();}

Note: "\" is a conversion character, and two "%" are printed out.

Result: