Listing 9 The function peek()

// ispeek -- istream::peek()
#include <istream>

int istream::peek()
    {   // peek at next char
    _Chcount = 0;
    int ch;
    _TRY_IO_BEGIN
    ch = ipfx(1) ? rdbuf()->sgetc() : EOF;
    isfx();
    _CATCH_IO_END
    return (ch);
    }

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