stdio.c File Reference

Standard I/0 functions. More...

Functions
void	putchar (int character)
	Writes the given character to the standard output (stdout). More...
void	puts (const char *str)
	Writes the string pointed by str to the standard output (stdout) and appends a newline character. More...
int	getchar (void)
	Returns the next character from the standard input (stdin). More...
char *	gets (char *str)
	Reads characters from the standard input (stdin). More...
int	atoi (const char *str)
	Convert the given string to an integer. More...
long	strtol (const char *str, char **endptr, int base)
	Converts the initial part of str to a long int value according to the given base, which. More...
int	fgetc (int fd)
	Same as getchar but reads from the given file descriptor. More...
char *	fgets (char *buf, int n, int fd)
	Same as gets but reads from the given file descriptor. More...
void	perror (const char *s)
	Prints a system error message. More...

Detailed Description

Standard I/0 functions.

Copyright

(c) 2014-2024 This file is distributed under the MIT License. See LICENSE.md for details.

Function Documentation

atoi()

int atoi

(

const char *

str

)

Convert the given string to an integer.

Parameters

str	The string to convert.

Returns

The integer contained inside the string.

fgetc()

int fgetc

(

int

fd

)

Same as getchar but reads from the given file descriptor.

Parameters

fd	The file descriptor from which it reads.

Returns

The read character.

fgets()

char* fgets	(	char *	buf,
		int	n,
		int	fd
	)

Same as gets but reads from the given file descriptor.

Parameters

buf	The buffer where the string should be placed.
n	The amount of characters to read.
fd	The file descriptor from which it reads.

Returns

The read string.

getchar()

int getchar

(

void

)

Returns the next character from the standard input (stdin).

Returns

The character received from stdin.

gets()

char* gets

(

char *

str

)

Reads characters from the standard input (stdin).

Parameters

str	Where the characters are stored.

Returns

The string received from standard input.

perror()

void perror

(

const char *

s

)

Prints a system error message.

Parameters

s	the message we prepend to the actual error message.

putchar()

void putchar

(

int

character

)

Writes the given character to the standard output (stdout).

Parameters

character

The character to send to stdout.

puts()

void puts

(

const char *

str

)

Writes the string pointed by str to the standard output (stdout) and appends a newline character.

Parameters

str	The string to send to stdout.

strtol()

long strtol	(	const char *	str,
		char **	endptr,
		int	base
	)

Converts the initial part of str to a long int value according to the given base, which.

Parameters

str	This is the string containing the integral number.
endptr	Set to the character after the numerical value.
base	The base must be between 2 and 36 inclusive, or special 0.

Returns

Integral number as a long int value, else zero value is returned.