📄 cwrd.c
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cwrite (buff, buffp1, len, fn)char *buff, *buffp1; int len, fn;{int unit, nwr;unit = buffp1-buff;len =* unit;nwr = write (fn, buff, len);return (nwr < 0 ? -1 : nwr/unit);}cread (buff, buffp1, len, fn)char *buff, *buffp1; int len, fn;{int unit, nrd;unit = buffp1 - buff;len =* unit;nrd = read(fn, buff, len);return (nrd < 0 ? -1 : nrd/unit);}
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