Defines the macros traditionally defined in the Standard C library header <stdio.h>.
#if <TRADITIONAL C HEADERS>
#include <stdio.h>
#undef clearerr
#undef feof
#undef ferror
#undef getc
#undef getchar
#undef putc
#undef putchar
namespace std {
using ::fclose;
using ::feof;
using ::ferror;
using ::fflush;
using ::fgetc;
using ::fgetpos;
using ::fgets;
using ::FILE;
using ::clearerr;
using ::fopen;
using ::fprintf;
using ::fpos_t;
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 ::putc;
using ::putchar;
using ::printf;
using ::puts;
using ::remove;
using ::rename;
using ::rewind;
using ::scanf;
using ::setbuf;
using ::setvbuf;
using ::size_t;
using ::sprintf;
using ::sscanf;
using ::tmpfile;
using ::tmpnam;
using ::ungetc;
using ::vfprintf;
using ::vprintf;
using ::vsprintf;
}
#endif
Remarks
Including this header also ensures that the names declared with external linkage in the Standard C library header are declared in the std namespace. In this implementation, the names may or may not also be declared in the global namespace, depending on the specific translation environment.