fork download

copy

#include <iostream>
using namespace std;
 
#define N 8
int arr[2*N];
int n=0;
void buildt()
{
	for(int i=n;i>0;i--)
	{
		arr[i]=arr[2*i]+arr[2*i+1];
	}
	return;
}
void printt()
{
	for(int i=0;i<2*n;i++)
	{
		cout>>"i= "<<i<<":"<<arr[i];
		if(i==n)
			cout<<endl;
	}
	cout<<endl;
}
 
int main()
{
	cin>>n;
	for(int i=0;i<n;i++)
	{
		cin>>arr[i+n];
	}
	buildt();
	printt();
	return 0;
}

prog.cpp: In function ‘void printt()’:
prog.cpp:19:7: error: no match for ‘operator>>’ (operand types are ‘std::ostream {aka std::basic_ostream<char>}’ and ‘const char [4]’)
   cout>>"i= "<<i<<":"<<arr[i];
   ~~~~^~~~~~~
In file included from /usr/include/c++/6/string:53:0,
                 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.tcc:1437:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^~~~~~~~
/usr/include/c++/6/bits/basic_string.tcc:1437:5: note:   template argument deduction/substitution failed:
prog.cpp:19:9: note:   ‘std::ostream {aka std::basic_ostream<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
   cout>>"i= "<<i<<":"<<arr[i];
         ^~~~~
In file included from /usr/include/c++/6/istream:934:0,
                 from /usr/include/c++/6/iostream:40,
                 from prog.cpp:1:
/usr/include/c++/6/bits/istream.tcc:955:5: note: candidate: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^~~~~~~~
/usr/include/c++/6/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
prog.cpp:19:9: note:   ‘std::ostream {aka std::basic_ostream<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
   cout>>"i= "<<i<<":"<<arr[i];
         ^~~~~
In file included from /usr/include/c++/6/istream:934:0,
                 from /usr/include/c++/6/iostream:40,
                 from prog.cpp:1:
/usr/include/c++/6/bits/istream.tcc:923:5: note: candidate: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^~~~~~~~
/usr/include/c++/6/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
prog.cpp:19:9: note:   ‘std::ostream {aka std::basic_ostream<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
   cout>>"i= "<<i<<":"<<arr[i];
         ^~~~~
In file included from /usr/include/c++/6/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/6/istream:756:5: note: candidate: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^~~~~~~~
/usr/include/c++/6/istream:756:5: note:   template argument deduction/substitution failed:
prog.cpp:19:9: note:   ‘std::ostream {aka std::basic_ostream<char>}’ is not derived from ‘std::basic_istream<char, _Traits>’
   cout>>"i= "<<i<<":"<<arr[i];
         ^~~~~
In file included from /usr/include/c++/6/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/6/istream:761:5: note: candidate: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^~~~~~~~
/usr/include/c++/6/istream:761:5: note:   template argument deduction/substitution failed:
prog.cpp:19:9: note:   ‘std::ostream {aka std::basic_ostream<char>}’ is not derived from ‘std::basic_istream<char, _Traits>’
   cout>>"i= "<<i<<":"<<arr[i];
         ^~~~~
In file included from /usr/include/c++/6/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/6/istream:803:5: note: candidate: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^~~~~~~~
/usr/include/c++/6/istream:803:5: note:   template argument deduction/substitution failed:
prog.cpp:19:9: note:   ‘std::ostream {aka std::basic_ostream<char>}’ is not derived from ‘std::basic_istream<char, _Traits>’
   cout>>"i= "<<i<<":"<<arr[i];
         ^~~~~
In file included from /usr/include/c++/6/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/6/istream:808:5: note: candidate: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^~~~~~~~
/usr/include/c++/6/istream:808:5: note:   template argument deduction/substitution failed:
prog.cpp:19:9: note:   ‘std::ostream {aka std::basic_ostream<char>}’ is not derived from ‘std::basic_istream<char, _Traits>’
   cout>>"i= "<<i<<":"<<arr[i];
         ^~~~~
In file included from /usr/include/c++/6/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/6/istream:924:5: note: candidate: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^~~~~~~~
/usr/include/c++/6/istream:924:5: note:   template argument deduction/substitution failed:
prog.cpp:19:9: note:   ‘std::ostream {aka std::basic_ostream<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
   cout>>"i= "<<i<<":"<<arr[i];
         ^~~~~

Standard output is empty