Language: C++

#include <iostream>
#include <string>
#include <queue>

using namespace std;

typedef struct{
	int x;
	int y;
	int dis;
} Point;

int main(){
	int w, h, i, j;
	int across[100][100], updown[100][100], visited[100][100];
	queue<Point> que;
	Point start = {0, 0, 0};
	Point now, next;
	
	while(1){
		cin >> w >> h;
		if(w == 0 && h == 0) break;
		
		for(i = 0; i < 2 * h - 1; i++){
			if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
			else for(j = 0; j < w; j++) cin >> updown[i];
		}
		
		for(i = 0; i < h; i++){
			for(j = 0; j < w; j++){
				visited[i][j] = 0;
			}
		}
		visited[start.y][start.x] = 1;
		que.push(start);
		
		while(que.empty() == 0){
			now = que.front();
			que.pop();
			next.dis = now.dis + 1;
			
			if(across[now.x] == 1) continue;
			

Compiler output:
a.cc: In function 'int main()':
a.cc:25:71: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'int [100]')
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                   ~~~ ^~ ~~~~~~~~~
      |                                                                   |              |
      |                                                                   |              int [100]
      |                                                                   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:25:82: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'int*'
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
/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:25:82: error: invalid conversion from 'int*' to 'short int' [-fpermissive]
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
      |                                                                                  |
      |                                                                                  int*
a.cc:25:82: error: cannot bind rvalue '(short int)((int*)(& across[i]))' 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:25:82: error: invalid conversion from 'int*' to 'short unsigned int' [-fpermissive]
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
      |                                                                                  |
      |                                                                                  int*
a.cc:25:82: error: cannot bind rvalue '(short unsigned int)((int*)(& across[i]))' 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:25:82: error: invalid conversion from 'int*' to 'int' [-fpermissive]
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
      |                                                                                  |
      |                                                                                  int*
a.cc:25:82: error: cannot bind rvalue '(int)((int*)(& across[i]))' 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:25:82: error: invalid conversion from 'int*' to 'unsigned int' [-fpermissive]
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
      |                                                                                  |
      |                                                                                  int*
a.cc:25:82: error: cannot bind rvalue '(unsigned int)((int*)(& across[i]))' 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:25:82: error: invalid conversion from 'int*' to 'long int' [-fpermissive]
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
      |                                                                                  |
      |                                                                                  int*
a.cc:25:82: error: cannot bind rvalue '(long int)((int*)(& across[i]))' 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:25:82: error: invalid conversion from 'int*' to 'long unsigned int' [-fpermissive]
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
      |                                                                                  |
      |                                                                                  int*
a.cc:25:82: error: cannot bind rvalue '(long unsigned int)((int*)(& across[i]))' 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:25:82: error: invalid conversion from 'int*' to 'long long int' [-fpermissive]
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
      |                                                                                  |
      |                                                                                  int*
a.cc:25:82: error: cannot bind rvalue '(long long int)((int*)(& across[i]))' 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:25:82: error: invalid conversion from 'int*' to 'long long unsigned int' [-fpermissive]
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
      |                                                                                  |
      |                                                                                  int*
a.cc:25:82: error: cannot bind rvalue '(long long unsigned int)((int*)(& across[i]))' 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:25:82: error: cannot bind non-const lvalue reference of type 'void*&' to an rvalue of type 'void*'
   25 |                         if(i % 2 != 0) for(j = 0; j < w - 1; j++) cin >> across[i];
      |                                                                          ~~~~~~~~^
/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+