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cstdio
鎖定
- 中文名
- cstdio
- 別 名
- C語言
- 類 別
- 計算機
cstdio使用方法
stdio.h是以往的C和C++的頭文件,cstdio是標準C++(STL),且cstdio中的函數都是定義在一個名稱空間std裏面的,如果要調用這個名字空間的函數,必須得加std::或者在文件中聲明using namespace std。
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#include<cstdio> using namespace std;/*你也可以同時加上這個語句*/
cstdio頭文件內容
// -*- C++ -*- forwarding header. // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 // Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, // USA. // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. // // ISO C++ 14882: 27.8.2 C Library files // /** @file cstdio * This is a Standard C++ Library file. You should @c #include this file * in your programs, rather than any of the "*.h" implementation files. * * This is the C++ version of the Standard C Library header @cstdio.h, * and its contents are (mostly) the same as that header, but are all * contained in the namespace @cstd. */ #ifndef _GLIBCXX_CSTDIO #define _GLIBCXX_CSTDIO 1 #pragma GCC system_header #include <bits/c++config.h> #include <cstddef> #include <stdio.h> // Get rid of those macros defined in <stdio.h> in lieu of real functions. #undef clearerr #undef fclose #undef feof #undef ferror #undef fflush #undef fgetc #undef fgetpos #undef fgets #undef fopen #undef fprintf #undef fputc #undef fputs #undef fread #undef freopen #undef fscanf #undef fseek #undef fsetpos #undef ftell #undef fwrite #undef getc #undef getchar #undef gets #undef perror #undef printf #undef putc #undef putchar #undef puts #undef remove #undef rename #undef rewind #undef scanf #undef setbuf #undef setvbuf #undef sprintf #undef sscanf #undef tmpfile #undef tmpnam #undef ungetc #undef vfprintf #undef vprintf #undef vsprintf namespace std { using ::FILE; using ::fpos_t; using ::clearerr; using ::fclose; using ::feof; using ::ferror; using ::fflush; using ::fgetc; using ::fgetpos; using ::fgets; using ::fopen; using ::fprintf; using ::fputc; using ::fputs; using ::fread; using ::freopen; using ::fscanf; using ::fseek; using ::fsetpos; using ::ftell; using ::fwrite; using ::getc; using ::getchar; using ::gets; using ::perror; using ::printf; using ::putc; using ::putchar; using ::puts; using ::remove; using ::rename; using ::rewind; using ::scanf; using ::setbuf; using ::setvbuf; using ::sprintf; using ::sscanf; using ::tmpfile; using ::tmpnam; using ::ungetc; using ::vfprintf; using ::vprintf; using ::vsprintf; } #if _GLIBCXX_USE_C99 #undef snprintf #undef vfscanf #undef vscanf #undef vsnprintf #undef vsscanf namespace __gnu_cxx { #if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC extern "C" int (snprintf)(char * restrict, size_t, const char * restrict, ...); extern "C" int ( vfscanf)(FILE * restrict, const char * restrict, __gnuc_va_list); extern "C" int ( vscanf)(const char * restrict, __gnuc_va_list); extern "C" int (vsnprintf)(char * restrict, size_t, const char * restrict, __gnuc_va_list); extern "C" int ( vsscanf)(const char * restrict, const char * restrict, __gnuc_va_list); #endif #if !_GLIBCXX_USE_C99_DYNAMIC using ::snprintf; using :: vfscanf; using :: vscanf; using ::vsnprintf; using ::vsscanf; #endif } namespace std { using __gnu_cxx:: snprintf; using __gnu_cxx::vfscanf; using __gnu_cxx::vscanf; using __gnu_cxx::vsnprintf; using __gnu_cxx:: vsscanf; } #endif #endif /*為了便於查看使用了全角空格" "*/
此文件來自C-Free 5 Professional
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- 參考資料
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- 1. C++ 語言和標準庫 .Microsoft MSDN[引用日期2014-05-25]
- 2. Visual C++ 資源 .Microsoft MSDN[引用日期2014-05-25]
- 3. cstdio頭文件內容 .開源中國社區[引用日期2014-05-25]