strspn

Find the first substring length.

size_t strspn (char * string, char * charset);

Required Header
<string.h>

Return Value

The length of the substring which consists entirely of charset is returned.

Parameters

string

  A string

charset

  A set of characters allowed in the substring

Remarks

The return value can be used as in index to the first character not in charset.

String

See Also    strchr, strcspn, strncmp, strncpy, _strspnp