Language: C++

#include<iostream>

using namespace std;

int field[12][12];
int came[12][12];
int islands;

void checker(int X,int Y)
{
	if(field[Y][X] == 1 && came[Y][X] == 0)
	{
		came[Y][X] = 1;
		if(X!=0)
		{
			checker(X-1,Y);
		}
		if(Y!=0)
		{
			checker(X,Y-1);
		}
		if(X!=11)
		{
			checker(X+1,Y);
		}
		if(Y!=11)
		{
			checker(X,Y+1);
		}		
	}
}

int main()
{
	while (for(int a = 0;a<12;a++)
	{
		cin >> field[a];
	})
	{
		for(int y = 0;x<12;x++)
		{
			for(int x = 0;y<12;y++)
			{
				if(field[y][x] == 1 && came[y][x] == 0)
				{
					island++;
					checker(x,y);
				}
			}
		}
		
		cout << islands << endl;

		for(int y = 0;y<11;y++)
		{
			for(int x = 0;x<11;x++)
			{
				came[y][x] = 0;
			}
		}
		
		islands = 0;
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:16: error: expected primary-expression before 'for'
   35 |         while (for(int a = 0;a<12;a++)
      |                ^~~
a.cc:35:16: error: expected ')' before 'for'
   35 |         while (for(int a = 0;a<12;a++)
      |               ~^~~
      |                )
a.cc:37:21: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'int [12]')
   37 |                 cin >> field[a];
      |                 ~~~ ^~ ~~~~~~~~
      |                 |             |
      |                 |             int [12]
      |                 std::istream {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/iostream:42,
                 from a.cc:1:
/usr/include/c++/14/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'int*'
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: invalid conversion from 'int*' to 'short int' [-fpermissive]
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
      |                               |
      |                               int*
a.cc:37:31: error: cannot bind rvalue '(short int)((int*)(& field[a]))' to 'short int&'
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: invalid conversion from 'int*' to 'short unsigned int' [-fpermissive]
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
      |                               |
      |                               int*
a.cc:37:31: error: cannot bind rvalue '(short unsigned int)((int*)(& field[a]))' to 'short unsigned int&'
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: invalid conversion from 'int*' to 'int' [-fpermissive]
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
      |                               |
      |                               int*
a.cc:37:31: error: cannot bind rvalue '(int)((int*)(& field[a]))' to 'int&'
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: invalid conversion from 'int*' to 'unsigned int' [-fpermissive]
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
      |                               |
      |                               int*
a.cc:37:31: error: cannot bind rvalue '(unsigned int)((int*)(& field[a]))' to 'unsigned int&'
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: invalid conversion from 'int*' to 'long int' [-fpermissive]
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
      |                               |
      |                               int*
a.cc:37:31: error: cannot bind rvalue '(long int)((int*)(& field[a]))' to 'long int&'
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: invalid conversion from 'int*' to 'long unsigned int' [-fpermissive]
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
      |                               |
      |                               int*
a.cc:37:31: error: cannot bind rvalue '(long unsigned int)((int*)(& field[a]))' to 'long unsigned int&'
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: invalid conversion from 'int*' to 'long long int' [-fpermissive]
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
      |                               |
      |                               int*
a.cc:37:31: error: cannot bind rvalue '(long long int)((int*)(& field[a]))' to 'long long int&'
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: invalid conversion from 'int*' to 'long long unsigned int' [-fpermissive]
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
      |                               |
      |                               int*
a.cc:37:31: error: cannot bind rvalue '(long long unsigned int)((int*)(& field[a]))' to 'long long unsigned int&'
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:37:31: error: cannot bind non-const lvalue reference of type 'void*&' to an rvalue of type 'void*'
   37 |                 cin >> field[a];
      |                        ~~~~~~~^
/usr/include/c++/14/istream:219:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  219 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:219:25: note:   no known conversion for argument 1 from 'int [12]' to 'float&'
  219 |       operator>>(float& __f)
      |                  ~~~~~~~^~~
/usr/include/c++/14/istream:223:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  223 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:223:26: note:   no known conversion for argument 1 from 'int [12]' to 'double&'
  223 |       operator>>(double& __f)
      |                  ~~~~~~~~^~~
/usr/include/c++/14/istream:227:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  227 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:227:31: note:   no known conversion for argument 1 from 'int [12]' to 'long double&'
  227 |       operator>>(long double& __f)
      |                  ~~~~~~~~~~~~~^~~
/usr/include/c++/14/istream:122:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/14/istream:122:36: note:   no known conversion for argument 1 from 'int [12]' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_ist