2 strpos - print the first occurrence of a string in another string
14 This function returns the location of the first occurance of the string t
15 in the string s. If t is not found within s, 0 is returned. If t is
16 found at the beginning of s, 1 is returned.
19 > strpos("abcdefg", "c")
21 > strpos("abcdefg", "def")
23 > strpos("abcdefg", "defg")
25 > strpos("abcdefg", "defgh")
27 > strpos("abcdefg", "abc")
29 > strpos("abcdefg", "xyz")