Language: C++

#include<bits/stdc++.h>
using namespace std;
int search(int n, vector<int>& arr)
{
  for(auto &m:arr)
  {
    if(m==n)
      return 0;
  }
  return 1;
}
int main()
{
  vector<int> arr;
  int x,n;
  cin>>x>>n;
  int h;
  for(int i=0;i<n;i++)
  {
    cin >>h;
    arr.push_back(h);
  }
  for(int i=0;i<100-n||i<n;i++)
  {
    if(search(n-i)==1)
    {cout <<n-i;
    return 0;}
    if(search(n+i)==1)
    {cout <<n+i;
    return 0;}     
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:14: error: no matching function for call to 'search(int)'
   25 |     if(search(n-i)==1)
      |        ~~~~~~^~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:2332:5: note: candidate: 'template<class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate> _ForwardIterator1 std::search(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2, _BinaryPredicate)'
 2332 |     search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
      |     ^~~~~~
/usr/include/c++/14/bits/stl_algobase.h:2332:5: note:   candidate expects 5 arguments, 1 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:4090:5: note: candidate: 'template<class _FIter1, class _FIter2> _FIter1 std::search(_FIter1, _FIter1, _FIter2, _FIter2)'
 4090 |     search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
      |     ^~~~~~
/usr/include/c++/14/bits/stl_algo.h:4090:5: note:   candidate expects 4 arguments, 1 provided
/usr/include/c++/14/bits/stl_algo.h:4184:5: note: candidate: 'template<class _ForwardIterator, class _Searcher> _ForwardIterator std::search(_ForwardIterator, _ForwardIterator, const _Searcher&)'
 4184 |     search(_ForwardIterator __first, _ForwardIterator __last,
      |     ^~~~~~
/usr/include/c++/14/bits/stl_algo.h:4184:5: note:   candidate expects 3 arguments, 1 provided
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:112:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> std::search(_ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2, _BinaryPredicate)'
  112 | search(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
      | ^~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:112:1: note:   candidate expects 6 arguments, 1 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:117:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> std::search(_ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2)'
  117 | search(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
      | ^~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:117:1: note:   candidate expects 5 arguments, 1 provided
a.cc:3:5: note: candidate: 'int search(int, std::vector<int>&)'
    3 | int search(int n, vector<int>& arr)
      |     ^~~~~~
a.cc:3:5: note:   candidate expects 2 arguments, 1 provided
a.cc:28:14: error: no matching function for call to 'search(int)'
   28 |     if(search(n+i)==1)
      |        ~~~~~~^~~~~
/usr/include/c++/14/bits/stl_algobase.h:2332:5: note: candidate: 'template<class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate> _ForwardIterator1 std::search(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2, _BinaryPredicate)'
 2332 |     search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
      |     ^~~~~~
/usr/include/c++/14/bits/stl_algobase.h:2332:5: note:   candidate expects 5 arguments, 1 provided
/usr/include/c++/14/bits/stl_algo.h:4090:5: note: candidate: 'template<class _FIter1, class _FIter2> _FIter1 std::search(_FIter1, _FIter1, _FIter2, _FIter2)'
 4090 |     search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
      |     ^~~~~~
/usr/include/c++/14/bits/stl_algo.h:4090:5: note:   candidate expects 4 arguments, 1 provided
/usr/include/c++/14/bits/stl_algo.h:4184:5: note: candidate: 'template<class _ForwardIterator, class _Searcher> _ForwardIterator std::search(_ForwardIterator, _ForwardIterator, const _Searcher&)'
 4184 |     search(_ForwardIterator __first, _ForwardIterator __last,
      |     ^~~~~~
/usr/include/c++/14/bits/stl_algo.h:4184:5: note:   candidate expects 3 arguments, 1 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:112:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> std::search(_ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2, _BinaryPredicate)'
  112 | search(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
      | ^~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:112:1: note:   candidate expects 6 arguments, 1 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:117:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> std::search(_ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2)'
  117 | search(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
      | ^~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:117:1: note:   candidate expects 5 arguments, 1 provided
a.cc:3:5: note: candidate: 'int search(int, std::vector<int>&)'
    3 | int search(int n, vector<int>& arr)
      |     ^~~~~~
a.cc:3:5: note:   candidate expects 2 arguments, 1 provided