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The C and C++ Include Header Files
cat -n /usr/include/c++/15/cstdio
1 // -*- C++ -*- forwarding header. 2 3 // Copyright (C) 1997-2025 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 /** @file include/cstdio 26 * This is a Standard C++ Library file. You should @c \#include this file 27 * in your programs, rather than any of the @a *.h implementation files. 28 * 29 * This is the C++ version of the Standard C Library header @c stdio.h, 30 * and its contents are (mostly) the same as that header, but are all 31 * contained in the namespace @c std (except for names which are defined 32 * as macros in C). 33 */ 34 35 // 36 // ISO C++ 14882: 27.8.2 C Library files 37 // 38 39 #ifndef _GLIBCXX_CSTDIO 40 #define _GLIBCXX_CSTDIO 1 41 42 #ifdef _GLIBCXX_SYSHDR 43 #pragma GCC system_header 44 #endif 45 46 #include <bits/c++config.h> 47 #include <stdio.h> 48 49 #if __cplusplus <= 201103L && !defined(_GLIBCXX_HAVE_GETS) 50 extern "C" char* gets (char* __s) __attribute__((__deprecated__)); 51 #endif 52 53 // Get rid of those macros defined in <stdio.h> in lieu of real functions. 54 #undef clearerr 55 #undef fclose 56 #undef feof 57 #undef ferror 58 #undef fflush 59 #undef fgetc 60 #undef fgetpos 61 #undef fgets 62 #undef fopen 63 #undef fprintf 64 #undef fputc 65 #undef fputs 66 #undef fread 67 #undef freopen 68 #undef fscanf 69 #undef fseek 70 #undef fsetpos 71 #undef ftell 72 #undef fwrite 73 #undef getc 74 #undef getchar 75 #if __cplusplus <= 201103L 76 # undef gets 77 #endif 78 #undef perror 79 #undef printf 80 #undef putc 81 #undef putchar 82 #undef puts 83 #undef remove 84 #undef rename 85 #undef rewind 86 #undef scanf 87 #undef setbuf 88 #undef setvbuf 89 #undef sprintf 90 #undef sscanf 91 #undef tmpfile 92 #undef tmpnam 93 #undef ungetc 94 #undef vfprintf 95 #undef vprintf 96 #undef vsprintf 97 98 namespace std 99 { 100 using ::FILE; 101 using ::fpos_t; 102 103 using ::clearerr; 104 using ::fclose; 105 using ::feof; 106 using ::ferror; 107 using ::fflush; 108 using ::fgetc; 109 using ::fgetpos; 110 using ::fgets; 111 using ::fopen; 112 using ::fprintf; 113 using ::fputc; 114 using ::fputs; 115 using ::fread; 116 using ::freopen; 117 using ::fscanf; 118 using ::fseek; 119 using ::fsetpos; 120 using ::ftell; 121 using ::fwrite; 122 using ::getc; 123 using ::getchar; 124 #if __cplusplus <= 201103L 125 // LWG 2249 126 using ::gets; 127 #endif 128 using ::perror; 129 using ::printf; 130 using ::putc; 131 using ::putchar; 132 using ::puts; 133 using ::remove; 134 using ::rename; 135 using ::rewind; 136 using ::scanf; 137 using ::setbuf; 138 using ::setvbuf; 139 using ::sprintf; 140 using ::sscanf; 141 using ::tmpfile; 142 #if _GLIBCXX_USE_TMPNAM 143 using ::tmpnam; 144 #endif 145 using ::ungetc; 146 using ::vfprintf; 147 using ::vprintf; 148 using ::vsprintf; 149 } // namespace 150 151 #if _GLIBCXX_USE_C99_STDIO 152 153 #undef snprintf 154 #undef vfscanf 155 #undef vscanf 156 #undef vsnprintf 157 #undef vsscanf 158 159 namespace __gnu_cxx 160 { 161 #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC 162 extern "C" int 163 (snprintf)(char * __restrict, std::size_t, const char * __restrict, ...) 164 throw (); 165 extern "C" int 166 (vfscanf)(FILE * __restrict, const char * __restrict, __gnuc_va_list); 167 extern "C" int (vscanf)(const char * __restrict, __gnuc_va_list); 168 extern "C" int 169 (vsnprintf)(char * __restrict, std::size_t, const char * __restrict, 170 __gnuc_va_list) throw (); 171 extern "C" int 172 (vsscanf)(const char * __restrict, const char * __restrict, __gnuc_va_list) 173 throw (); 174 #endif 175 176 #if !_GLIBCXX_USE_C99_DYNAMIC 177 using ::snprintf; 178 using ::vfscanf; 179 using ::vscanf; 180 using ::vsnprintf; 181 using ::vsscanf; 182 #endif 183 } // namespace __gnu_cxx 184 185 namespace std 186 { 187 using ::__gnu_cxx::snprintf; 188 using ::__gnu_cxx::vfscanf; 189 using ::__gnu_cxx::vscanf; 190 using ::__gnu_cxx::vsnprintf; 191 using ::__gnu_cxx::vsscanf; 192 } // namespace std 193 194 #endif // _GLIBCXX_USE_C99_STDIO 195 196 #endif
