Resource for Source: C/C++/Resource for Source - C-C++.iso/codelib6/v_08_11/8n11085a

Text File | 1995-11-01 | 636 b | 26 lines

# include <stdio.h>
typedef int Truth;
class File { // Implementation layered on FILE
public:
    File( char *name = "", char *mode = "r") { /* implemented as before */ }

    ~File()           { if( fp) fclose( fp); }

    Truth isok()      { return state; }

    Truth iseof()     { return feof( fp); }
protected:          // only visible to derived class member functions
    int get()         { return getc( fp); }

    void unget(int c) { (void)ungetc( c, fp); }

    int peek()        { int c = get(); unget(c); return c; }

    void put( int c)  { putc( c, fp); }
private:
    FILE *fp;
    int state;
};