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File input/output
From cppreference.com
<
c
C
Compiler support
Language
Headers
Type support
Program utilities
Variadic function support
Error handling
Dynamic memory management
Strings library
Algorithms
Numerics
Date and time utilities
Input/output support
Localization support
Concurrency support
(C11)
Technical Specifications
Symbol index
[edit]
File input/output
Types and objects
stdin
stdout
stderr
FILE
fpos_t
Functions
File access
fopen
fopen_s
(C11)
freopen
freopen_s
(C11)
fwide
(C95)
setbuf
setvbuf
fclose
fflush
Unformatted input/output
fgetc
fgets
fputc
fputs
getchar
gets
gets_s
(until C11)
(C11)
putchar
puts
ungetc
fgetwc
getwc
(C95)
(C95)
fgetws
(C95)
fputwc
putwc
(C95)
(C95)
fputws
(C95)