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#pragma once
#include <stdarg.h>
/** An object type used for streams */
typedef struct kIoDevice {
int id;
/** Functions that prints a character to the stream */
void (*putc)(const struct kIoDevice *, char);
/** Function that prints a string to the stream */
int (*puts)(const struct kIoDevice *, const char *, int);
/** Flush all buffers */
void (*flush)(const struct kIoDevice *);
} FILE;
/** A FILE value corresponding to stdin, the keyboard buffer */
extern FILE *stdin;
/** A FILE value corresponding to stdout, the display */
extern FILE *stdout;
/** A FILE value corresponding to stderr, the uart */
extern FILE *stderr;
/**
* Write the formatted string to stdout
*
* Supports ``%s`` (string), ``%d`` (decimal), ``%u`` (unsigned), ``%x`` (hexadecimal)
*/
int printf(const char *restrict format, ...);
/**
* Write the formatted string to stream; see printf
*/
int fprintf(FILE *restrict stream, const char *restrict format, ...);
/**
* Write the formatted string to stream; see printf
*/
int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap);
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