strspn() String Function strspn() Return length a string includes characters in another #include <string.h> unsigned int strspn(string1, string2); char *string1; char *string2; strspn returns the length for which string1 initially consists only of characters that are found in string2. For example, char *s1 = "hello, world"; char *s2 = "kernighan & ritchie"; strcspn(s1, s2); returns two, which is the length for which the first string in- itially consists of characters found in the second. ***** See Also ***** string functions, string.h COHERENT Lexicon Page 1