fork download

copy

#include <iostream>
using namespace std;
 
std::string get_host_from_url(const std::string& url){
int index = url.find("://");
std::string host = "";
cout <<index << endl;
    if(index >=0) {
        //host = url.substr(0, url.find("/"));
        //return host;
    //} else {
        const std::string& uin = url.substr(index+3);
        url = uin;
        cout << url << endl;
      }  host = url.substr(0, url.find("/"));
        return host;
    }
 
int main() {
	// your code goes here
	std::string output = get_host_from_url("http://w...content-available-to-author-only...o.uk/path1/path2");	
	cout << output <<endl;
	return 0;
}
 

prog.cpp: In function ‘std::__cxx11::string get_host_from_url(const string&)’:
prog.cpp:13:15: error: passing ‘const string {aka const std::__cxx11::basic_string<char>}’ as ‘this’ argument discards qualifiers [-fpermissive]
         url = uin;
               ^~~
In file included from /usr/include/c++/6/string:52:0,
                 from /usr/include/c++/6/bits/locale_classes.h:40,
                 from /usr/include/c++/6/bits/ios_base.h:41,
                 from /usr/include/c++/6/ios:42,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/6/bits/basic_string.h:565:7: note:   in call to ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’
       operator=(const basic_string& __str)
       ^~~~~~~~

Standard output is empty