Man page 9 : get_options

get_options - Parse a string into a list of integers

char * get_options(const char *  str , int  nints , int *  ints );

str
    String to be parsed

nints
    size of integer array

ints
    integer array

This function parses a string containing a comma-separated list of integers, a hyphen-separated range of _positive_ integers, or a combination of both. The parse halts when the array is full, or when no more numbers can be retrieved from the string.

Return value is the character in the string which caused the parse to end (typically a null terminator, if str is completely parseable).