C-language learning

One. How files are used

R Read-only RB read-only r+ rb+ (without B as an existing text file with B as binary file (binary) with + sign for read-write files)

W only write WB write only

A append ab append

Two. Description

The 1.C language sees the input of a computer as a file. For example, keyboard files, screen files, and so on. The ANSI C standard stipulates that the system will automatically open the keyboard, screen, error three files when executing the program. The file pointers for these three files are: standard input stdin, standard output stdout, and standard error stderr

Fclose: File Close

Fgetc: Reads a character

FPUTC: Write a character to the file

Fgets (): Reading a string from a file

Fputs (): Write the string to the file

C-language learning