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Next, you must arrange for the serial number to be copied into the new
character array using strcpy, for string copy,
another function from the string library. Note that the target array is
the first argument, and the source array is the second:
strcpy (serial_number, input_buffer);
The effect of strcpy is to copy the serial number from the
input_buffer array, which has to be big enough for serial numbers of
any conceivable length, into the serial_number array, which is just big
enough to hold the number actually observed:
input_buffer Null character | | v v *---*---*---*---*---*---*---*---*---*---*---*---*---*---*---*- | T | P | W | - | E | - | 7 | 8 | 3 | | | | | | | *---*---*---*---*---*---*---*---*---*---*---*---*---*---*---*-- | | | | | | | | | | | | | | | | | | | | <-- Copy operation v v v v v v v v v v *---*---*---*---*---*---*---*---*---*---* | T | P | W | - | E | - | 7 | 8 | 3 | | *---*---*---*---*---*---*---*---*---*---* ^ | serial_number