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Standard library header <stdio.h>

From cppreference.net
C
Standard Library headers

此头文件属于 输入/输出 库的一部分，提供通用文件操作支持，并包含适用于窄字符的I/O函数。

此章节内容不完整
原因：7.23 输入/输出 <stdio.h>；复制/共享 c/io 的子集

概要 

#define __STDC_VERSION_STDIO_H__ 202311L
typedef /* 详见描述 */ FILE;
typedef /* 详见描述 */ size_t;
typedef /* 详见描述 */ FILE;
typedef /* 详见描述 */ fpos_t;
#define NULL         /* 详见描述 */
#define _IOFBF       /* 详见描述 */
#define _IOLBF       /* 详见描述 */
#define _IONBF       /* 详见描述 */
#define BUFSIZ       /* 详见描述 */
#define EOF          /* 详见描述 */
#define FOPEN_MAX    /* 详见描述 */
#define FILENAME_MAX /* 详见描述 */
#define L_tmpnam     /* 详见描述 */
#define SEEK_CUR     /* 详见描述 */
#define SEEK_END     /* 详见描述 */
#define SEEK_SET     /* 详见描述 */
#define TMP_MAX      /* 详见描述 */
#define stdin        /* 详见描述 */
#define stdout       /* 详见描述 */
#define stderr       /* 详见描述 */
#define _PRINTF_NAN_LEN_MAX /* 详见描述 */
int remove(const char* filename);
int rename(const char* old, const char* new);
FILE* tmpfile(void);
char* tmpnam(char* s);
int fclose(FILE* stream);
int fflush(FILE* stream);
FILE* fopen(const char* restrict filename, const char* restrict mode);
FILE* freopen(const char* restrict filename, const char* restrict mode,
FILE* restrict stream);
void setbuf(FILE* restrict stream, char* restrict buf);
int setvbuf(FILE* restrict stream, char* restrict buf, int mode, size_t size);
int printf(const char* restrict format, ...);
int scanf(const char* restrict format, ...);
int snprintf(char* restrict s, size_t n, const char* restrict format, ...);
int sprintf(char* restrict s, const char* restrict format, ...);
int sscanf(const char* restrict s, const char* restrict format, ...);
int vfprintf(FILE* restrict stream, const char* restrict format, va_list arg);
int vfscanf(FILE* restrict stream, const char* restrict format, va_list arg);
int vprintf(const char* restrict format, va_list arg);
int vscanf(const char* restrict format, va_list arg);
int vsnprintf(char* restrict s, size_t n, const char* restrict format, va_list arg);
int vsprintf(char* restrict s, const char* restrict format, va_list arg);
int vsscanf(const char* restrict s, const char* restrict format, va_list arg);
int fgetc(FILE* stream);
char* fgets(char* restrict s, int n, FILE* restrict stream);
int fputc(int c, FILE* stream);
int fputs(const char* restrict s, FILE* restrict stream)<span class

仅当实现定义了 __STDC_LIB_EXT1__ 且用户代码在包含 <stdio.h> 前额外定义了 __STDC_WANT_LIB_EXT1__ 时： 

#if defined(__STDC_WANT_LIB_EXT1__)
#define L_tmpnam_s /* 参见描述 */
#define TMP_MAX_S  /* 参见描述 */
typedef /* 参见描述 */ errno_t;
typedef /* 参见描述 */ rsize_t;
errno_t tmpfile_s(FILE* restrict* restrict streamptr);
errno_t tmpnam_s(char* s, rsize_t maxsize);
errno_t fopen_s(FILE* restrict* restrict streamptr,
const char* restrict filename, const char* restrict mode);
errno_t freopen_s(FILE* restrict* restrict newstreamptr,
const char* restrict filename, const char* restrict mode,
FILE* restrict stream);
int fprintf_s(FILE* restrict stream, const char* restrict format, ...);
int fscanf_s(FILE* restrict stream, const char* restrict format, ...);
int printf_s(const char* restrict format, ...);
int scanf_s(const char* restrict format, ...);
int snprintf_s(char* restrict s, rsize_t n, const char* restrict format, ...);
int sprintf_s(char* restrict s, rsize_t n, const char* restrict format, ...);
int sscanf_s(const char* restrict s, const char* restrict format, ...);
int vfprintf_s(FILE* restrict stream, const char* restrict format, va_list arg);
int vfscanf_s(FILE* restrict stream, const char* restrict format, va_list arg);
int vprintf_s(const char* restrict format, va_list arg);
int vscanf_s(const char* restrict format, va_list arg);
int vsnprintf_s(char* restrict s, rsize_t n, const char* restrict format, va_list arg);
int vsprintf_s(char* restrict s, rsize_t n, const char* restrict format, va_list arg);
int vsscanf_s(const char* restrict s, const char* restrict format, va_list arg);
char* gets_s(char* s, rsize_t n);
#endif