Answers to questions reviewed by C/C ++ skills of a Company X

Non-standard answer: only one test case is passed, and then improvements are made.

# Include "stdafx. H "# include <stdio. h> # include <string. h> # include <vector> # include <list> # include <iostream> # include <stack> # include <queue> # include <algorithm> using namespace STD; typedef basic_string <char >:: size_type S_T; int imylistcount = 0; struct mylist {int index; string strdominname; STD: Stack <string> listsondomin;}; STD :: list <mylist> m_list; int add_sondomin (mylist & mylist); bool mysort (const myli St & list1, const mylist & list2); // sorting method int add_host_name (const char * host_name); int get_host_name (INT serial_number, int host_name_max_length, char * host_name ); void clear (void); bool mysort (const mylist & list1, const mylist & list2) // sorting method {STD: Stack <string> templist1; STD :: stack <string> templist2; const char * chlist1; const char * chlist2; templist1 = list1.listsondomin; templist2 = list2.listsondomin; While ((! Templist1.empty ())&&(! Templist2.empty () {chlist1 = templist1.top (). c_str (); chlist2 = templist2.top (). c_str (); While (* chlist1 = * chlist2) & (* chlist1! = '\ 0' & * chlist2! = '\ 0') {chlist1 ++; chlist2 ++;} If (* chlist1) <(* chlist2) {return true; // before templist1} If (* chlist1)> (* chlist2) {return false; // After templist2} templist1.pop (); templist2.pop ();} if (templist1.empty () {return true; // top of templist1} If (templist2.empty () {return false ;}} int add_sondomin (mylist & mylist) {S_T ulstartindex = 0; S_T ulfindindex = 0; S_T Len = 0; bool BGO = true; do {ulfindindex = mylist. strdominname. find ('. ', ulstartindex); If (ulfindindex = string: NPOs) {BGO = false;} Len = ulfindindex-ulstartindex; If (LEN <0) {cout <"ulfindindex is error, please check out \ n" <Endl; Return-1;} mylist. listsondomin. push (mylist. strdominname. substr (ulstartindex, Len); ulstartindex = ulfindindex + 1;} while (BGO); Return 0 ;} /*************************************** * ************************************ description: add the host name input Param: host_name host name string, non-empty string output Param: no return value: 0 is returned successfully, -1 ************************************ **************************************** */INT add_host_name (const char * host_name) {/* implement the function here */mylist templist; templist. index = imylistcount; templist. strdominname = host_name; add_sondomin (templist); m_list.push_back (templist); // cout <templist. strdominname. c_str () <Endl; // templist. strdominname. fin // string: NPOs; return 0 ;} /*************************************** * ************************************ description: obtain the serial number after the host name input Param: serial_number is sorted. The maximum length of host_name_max_length host_name starts from 1, including '\ 0' output Param: host_name host name string, which must include' \ 0 ', memory is allocated and released by the caller. Return Value: 0 is returned for success, and-1 is returned for failure (for example, serial_number is out of range and the maximum length is not enough) **************************************** * ***********************************/INT get_host_name (INT serial_number, int host_name_max_length, char * host_name) {/* implement the function here */m_list.sort (mysort); If (m_list.size () <serial_number) {cout <"input serial_number is wrong" <Endl; Return-1 ;}list <mylist >:: iterator my_iter = m_list.begin (); List <mylist> :: iterator iter_end = m_list.end (); int I = 0; while (I <(serial_number-1) {my_iter ++; I ++;} Char * temp_host_name = (char *) malloc (host_name_max_length); If (null = temp_host_name) {cout <"malloc temp_host_name failed \ n" <Endl; Return-1;} // strcpy (temp_host_name, (* my_iter ). strdominname. c_str (); memcpy (host_name, (const char *) (* my_iter ). strdominname. c_str (), host_name_max_length); // * (temp_host_name + host_name_max_length) = '\ 0'; // strcpy (host_name, temp_host_name); // host_name = temp_host_name; return 0 ;} /*************************************** * ************************************ description: clear all host names input Param: No output Param: no return value: no *************************************** * ***********************************/void clear (void) {m_list.clear ();/* implement the function here */}

// The main function is a test case int main () {If (0 = add_host_name ("mail.w.wei.com") {cout <"add mail.w.wei.com successfully" <Endl ;} if (0 = add_host_name ("Your wei.com") {cout <"add your wei.com successfully" <Endl;} If (0 = add_host_name ("teltalk.org ")) {cout <"add teltalk.org successfully" <Endl;} If (0 = add_host_name ("google.com.hk") {cout <"add google.com.hk successfully" <Endl ;} if (0 = add_host_name ("imail.w.wei.com") {cout <"add imail.w.wei.com successfully" <Endl;} Char out_str [20]; if (0 = get_host_name (4, sizeof (out_str), out_str )) {cout <"Get successfully \ n" <out_str <"\ n" <Endl;} Char A; scanf (& A); return 1 ;}

I am in a hurry and have less comments. Please try again later.