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#include <iostream>
#include <vector>
using namespace std;
 
int main() {
	// your code goes here
	vector<int> v(3, 1);
	v.push_back(7); // vector v: 1 1 1 7
 	vector<int>::iterator i = find(v.begin(), v.end(), 7);
 	cout << "Capacity: " << v.capacity() << endl;
	if (i != v.end())
 		cout << *i;
	else
		 cout << "not found";
 
	return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:9:55: error: no matching function for call to ‘find(std::vector<int>::iterator, std::vector<int>::iterator, int)’
   vector<int>::iterator i = find(v.begin(), v.end(), 7);
                                                       ^
In file included from /usr/include/c++/6/bits/locale_facets.h:48:0,
                 from /usr/include/c++/6/bits/basic_ios.h:37,
                 from /usr/include/c++/6/ios:44,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/6/bits/streambuf_iterator.h:369:5: note: candidate: template<class _CharT2> typename __gnu_cxx::__enable_if<std::__is_char<_CharT2>::__value, std::istreambuf_iterator<_CharT> >::__type std::find(std::istreambuf_iterator<_CharT>, std::istreambuf_iterator<_CharT>, const _CharT2&)
     find(istreambuf_iterator<_CharT> __first,
     ^~~~
/usr/include/c++/6/bits/streambuf_iterator.h:369:5: note:   template argument deduction/substitution failed:
prog.cpp:9:55: note:   ‘__gnu_cxx::__normal_iterator<int*, std::vector<int> >’ is not derived from ‘std::istreambuf_iterator<_CharT>’
   vector<int>::iterator i = find(v.begin(), v.end(), 7);
                                                       ^

Standard output is empty