标准库标头 <stdio.h>

 

C

编译器支持

语言

头文件

类型支持

程序工具

可变参数函数支持

错误处理

动态内存管理

字符串库

算法

数值

日期和时间工具

输入/输出支持

本地化支持

并发支持(C11)

技术规范

符号索引

 

标准库头

<assert.h> <complex.h>(C99) <ctype.h> <errno.h> <fenv.h>(C99) <float.h> <inttypes.h>(C99)     <iso646.h>(C95) <limits.h> <locale.h> <math.h>

<setjmp.h> <signal.h> <stdalign.h>(C11*) <stdarg.h> <stdatomic.h>(C11)     <stdbit.h>(C23) <stdbool.h>(C99*) <stdckdint.h>(C23) <stddef.h> <stdint.h>(C99) <stdio.h>

<stdlib.h> <stdmchar.h>(C29) <stdnoreturn.h>(C11*) <string.h> <tgmath.h>(C99) <threads.h>(C11) <time.h> <uchar.h>(C11) <wchar.h>(C95) <wctype.h>(C95)

 

此标头是输入输出库的一部分，提供通用的文件操作支持，还提供在窄字符上工作的 I/O 函数。

概要

#define __STDC_VERSION_STDIO_H__ 202311L   typedef/* 见描述 */FILE;typedef/* 见描述 */size_t;typedef/* 见描述 */FILE;typedef/* 见描述 */fpos_t;   #define NULL /* 见描述 */#define _IOFBF /* 见描述 */#define _IOLBF /* 见描述 */#define _IONBF /* 见描述 */#define BUFSIZ /* 见描述 */#define EOF /* 见描述 */#define FOPEN_MAX /* 见描述 */#define FILENAME_MAX /* 见描述 */#define L_tmpnam /* 见描述 */#define SEEK_CUR /* 见描述 */#define SEEK_END /* 见描述 */#define SEEK_SET /* 见描述 */#define TMP_MAX /* 见描述 */   #define stdin /* 见描述 */#define stdout /* 见描述 */#define stderr /* 见描述 */   #define _PRINTF_NAN_LEN_MAX /* 见描述 */   intremove(constchar* filename);intrename(constchar* old, constchar* new);FILE*tmpfile(void);char*tmpnam(char* s);intfclose(FILE* stream);intfflush(FILE* stream);FILE*fopen(constchar*restrict filename, constchar*restrict mode);FILE*freopen(constchar*restrict filename, constchar*restrict mode, FILE*restrict stream);voidsetbuf(FILE*restrict stream, char*restrict buf);intsetvbuf(FILE*restrict stream, char*restrict buf, int mode, size_t size);intprintf(constchar*restrict format, ...);intscanf(constchar*restrict format, ...);intsnprintf(char*restrict s, size_t n, constchar*restrict format, ...);intsprintf(char*restrict s, constchar*restrict format, ...);intsscanf(constchar*restrict s, constchar*restrict format, ...);intvfprintf(FILE*restrict stream, constchar*restrict format, va_list arg);intvfscanf(FILE*restrict stream, constchar*restrict format, va_list arg);intvprintf(constchar*restrict format, va_list arg);intvscanf(constchar*restrict format, va_list arg);intvsnprintf(char*restrict s, size_t n, constchar*restrict format, va_list arg);intvsprintf(char*restrict s, constchar*restrict format, va_list arg);intvsscanf(constchar*restrict s, constchar*restrict format, va_list arg);intfgetc(FILE* stream);char*fgets(char*restrict s, int n, FILE*restrict stream);intfputc(int c, FILE* stream);intfputs(constchar*restrict s, FILE*restrict stream);intgetc(FILE* stream);intgetchar(void);intputc(int c, FILE* stream);intputchar(int c);intputs(constchar* s);intungetc(int c, FILE* stream);size_tfread(void*restrict ptr, size_t size, size_t nmemb, FILE*restrict stream);size_tfwrite(constvoid*restrict ptr, size_t size, size_t nmemb, FILE*restrict stream);intfgetpos(FILE*restrict stream, fpos_t*restrict pos);intfseek(FILE* stream, longint offset, int whence);intfsetpos(FILE* stream, constfpos_t* pos);longintftell(FILE* stream);voidrewind(FILE* stream);voidclearerr(FILE* stream);intfeof(FILE* stream);intferror(FILE* stream);voidperror(constchar* s);intfprintf(FILE*restrict stream, constchar*restrict format, ...);intfscanf(FILE*restrict stream, constchar*restrict format, ...);

仅当实现定义了 __STDC_LIB_EXT1__，而且用户代码在对 <stdio.h> 的所有包含之前定义了 __STDC_WANT_LIB_EXT1__：

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