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Happily, the read function, scanf, recognizes a %s
read specification. On seeing %s, scanf reads a string from the
input stream, up to the first whitespace character—space, tab, or
carriage return. Then, scanf deposits that string into the
memory chunk identified, as always, by an address.
Suppose, for example, that the expression scanf ("%s", input_buffer)
is evaluated, given that the next unread characters are
C-IBM. The evaluation causes the first part of the
input_buffer array to look like this:
input_buffer
*--------*--------*
|00000011|10011000|
*--------*--------*
-----------------
|
| C - I B M \0
| | | | | | |
v v v v v v v
-------- -------- -------- -------- -------- --------
----*--------*--------*--------*--------*--------*--------*-
|01000011|00101101|01001001|01000010|01001101|00000000|
---*--------*--------*--------*--------*--------*--------*---
920 921 922 923 924 925