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Update 15.txt #21

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3 changes: 2 additions & 1 deletion ch13/Exercises/15.txt
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Expand Up @@ -17,4 +17,5 @@ int f(char *s, char *t)
(c) In general, what value does f return when passed two strings s and t?
It returns the address of the pointer of the first character in s that doesn't have
a matching character in t minus the address of the first character in s. This is
equivalent to returning the index of that particular character in s.
equivalent to returning the index of that particular character in s.However, if all
the characters in s have matching characters in t, it will return the length of s.