Name
strspn
Synopsis
int strspn(stringstring, stringcharacters[, intoffset[, intlength]])
Returns the length of the substring in
string that consists solely of characters
in characters. If
offset is positive, the search starts at
that character; if it is negative, the substring starts at the
character offset characters from the
string’s end. If length is given and is
positive, that many characters from the start of the substring are
checked. If length is given and is
negative, the check ends length characters
from the end of string.
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