stdio.h File Reference

#include <types.h>

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Functions
void	putchar (char c) OLDCALL
void	printf (const char *format,...) OLDCALL REENTRANT
void	sprintf (char *str, const char *format,...) OLDCALL REENTRANT
void	puts (const char *s)
char *	gets (char *s) OLDCALL
char	getchar (void) OLDCALL

Detailed Description

Basic file/console input output functions.

Including stdio.h will use a large number of the background tiles for font characters. If stdio.h is not included then that space will be available for use with other tiles instead.

Function Documentation

putchar()

void putchar

(

char

c

)

Print char to stdout.

Parameters

c	Character to print

printf()

void printf	(	const char *	format,
			...
	)

Print the string and arguments given by format to stdout.

Parameters

format

The format string as per printf

Does not return the number of characters printed.

Currently supported:

• %hx (char as hex)
• %hu (unsigned char)
• %hd (signed char)
• %c (character)
• %u (unsigned int)
• %d (signed int)
• %x (unsigned int as hex)
• %s (string)

Warning: to correctly pass parameters (such as chars, ints, etc) all of them should always be explicitly cast as when calling the function. See docs_chars_varargs for more details.

sprintf()

void sprintf	(	char *	str,
		const char *	format,
			...
	)

Print the string and arguments given by format to a buffer.

Parameters

str	The buffer to print into
format	The format string as per printf

Does not return the number of characters printed.

Warning: to correctly pass parameters (such as chars, ints, etc) all of them should always be explicitly cast as when calling the function. See docs_chars_varargs for more details.

puts()

void puts

(

const char *

s

)

puts() writes the string s and a trailing newline to stdout.

gets()

char* gets

(

char *

s

)

gets() Reads a line from stdin into a buffer pointed to by s.

Parameters

s	Buffer to store string in

Reads until either a terminating newline or an EOF, which it replaces with '\0'. No check for buffer overrun is performed.

Returns: Buffer pointed to by s

getchar()

char getchar

(

void

)

getchar() Reads and returns a single character from stdin.