View Compilation Error

0_0_32934099_16702.cpp: In function 'void dfs(int, int)':
0_0_32934099_16702.cpp:13:6: error: 't' was not declared in this scope
   if(t[k][l]=='@')
      ^
0_0_32934099_16702.cpp: In function 'int main()':
0_0_32934099_16702.cpp:31:10: error: 't' was not declared in this scope
     cin>>t[i][j];
          ^
0_0_32934099_16702.cpp:37:9: error: 't' was not declared in this scope
      if(t[i][j]=='@')
         ^