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int fgetc(FILE *stream);
int getc(FILE *stream);
int getchar(void);
 
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int fscanf(FILE * restrict stream, const char * restrict format, …);
int scanf(const char * restrict format, …);
int sscanf(const char * restrict str, const char * restrict format, …);
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typedef struct _iobuf
{
 char* _ptr;//Ö¸Ïòµ±Ç°»º³åÇø¶ÁȡλÖÃ
 int _cnt;//»º³åÇøÖÐÊ£ÓàÊý¾Ý³¤¶È
 char* _base;
 int _flag;
 int _file;
 int _charbuf;
 int _bufsiz;
 char* _tmpfname;
} FILE;
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__CRT_INLINE int __cdecl __MINGW_NOTHROW getchar (void)
{
  return (--stdin->_cnt >= 0)
    ?  (int) (unsigned char) *stdin->_ptr++
    : _filbuf (stdin);
}
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/*
* File: main.cpp
* Author: Vicky
*
* Created on 2010Äê4ÔÂ29ÈÕ, ÉÏÎç9:46
*/
#include <iostream>
using namespace std;
int maximum(int[], int);
int main(int argc, char** argv) {
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int isalnum(int ch) ÈôchÊÇ×Öĸ('A'-'Z','a'-'z')»òÊý×Ö('0'-'9'),·µ»Ø·Ç0Öµ,·ñÔò·µ»Ø0
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