cstdio头文件

cstdio是什么

相当于stdio.h

cstdio怎么用

标准输入输出，几乎没什么用（Dev-c++里有和没有一模一样）

printf

#include 
  
    using namespace std; int main(){ printf("Hello World"\n); return 0; } 
  

#include 
  
    using namespace std; int main(){ int a=0,b=100; printf("%d %d\n",a,b); return 0; } 
  

scanf

#include 
  
    using namespace std; int a,b; int main(){ scanf("%d %d",&a,&b); printf("%d %d\n",a,b); return 0; } 
  

getch

#include 
  
    using namespace std; char c; int main(){ c=getch(); printf("%c\n",c); return 0; } 
  

cstdio缺失

其实有两个cstdio

第一个：c:\Program Flies(x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64mingw32\4.9.2\include\c++

// -*- C++ -*- forwarding header. // Copyright (C) 1997-2014 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 3, 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // 
  . / @file include/cstdio * This is a Standard C++ Library file. You should @c \#include this file * in your programs, rather than any of the @a *.h implementation files. * * This is the C++ version of the Standard C Library header @c stdio.h, * and its contents are (mostly) the same as that header, but are all * contained in the namespace @c std (except for names which are defined * as macros in C). */ // // ISO C++ 14882: 27.8.2 C Library files // #pragma GCC system_header #include 
  
    #include 
   
     #ifndef _GLIBCXX_CSTDIO #define _GLIBCXX_CSTDIO 1 #ifndef _GLIBCXX_HAVE_GETS extern "C" char* gets (char* __s) __attribute__((deprecated)); #endif // Get rid of those macros defined in 
    
      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 #if __cplusplus <= L # undef gets #endif #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; #if __cplusplus <= L // LWG 2249 using ::gets; #endif 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; #if _GLIBCXX_USE_TMPNAM using ::tmpnam; #endif using ::ungetc; using ::vfprintf; using ::vprintf; using ::vsprintf; } // namespace #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, std::size_t, const char * __restrict, ...) throw (); 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, std::size_t, const char * __restrict, __gnuc_va_list) throw (); extern "C" int (vsscanf)(const char * __restrict, const char * __restrict, __gnuc_va_list) throw (); #endif #if !_GLIBCXX_USE_C99_DYNAMIC using ::snprintf; using ::vfscanf; using ::vscanf; using ::vsnprintf; using ::vsscanf; #endif } // namespace __gnu_cxx namespace std { using ::__gnu_cxx::snprintf; using ::__gnu_cxx::vfscanf; using ::__gnu_cxx::vscanf; using ::__gnu_cxx::vsnprintf; using ::__gnu_cxx::vsscanf; } // namespace std #endif // _GLIBCXX_USE_C99 #endif 
     
    
  

第二个：c:\Program Flies(x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64mingw32\4.9.2\include\c++\tr1

// TR1 cstdio -*- C++ -*- // Copyright (C) 2006-2014 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 3, 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // 
  . / @file tr1/cstdio * This is a TR1 C++ Library header. */ #ifndef _GLIBCXX_TR1_CSTDIO #define _GLIBCXX_TR1_CSTDIO 1 #pragma GCC system_header #include 
  
    #if _GLIBCXX_USE_C99 namespace std _GLIBCXX_VISIBILITY(default) { namespace tr1 { using std::snprintf; using std::vsnprintf; using std::vfscanf; using std::vscanf; using std::vsscanf; } } #endif #endif // _GLIBCXX_TR1_CSTDIO