iOS function variable parameters

1. The parameter type is the NSString type, after which the params is the first parameter followed by a comma and three dots (fixed format)-(void)  test: (nsstring*) params,... {    nsstring* curstr;    va_list list;     if (params)     {        //1. Gets the value of the first parameter          nslog (@ "%@",  params);                 //2. Starting with the 2nd parameter, the values of all parameters are obtained          va_start (List, params);        while  (( Curstr= va_arg (list, nsstring*)) {             nslog (@ "%@",  curstr);        }         va_end (list);     }}//2. Test modifier [self  test:@ "1" @ "2" @ "3", Nil];//3. Note, be sure to write nil, otherwise the function cannot jump out of the while loop.

iOS function variable parameters