View Compilation Error

0_0_35235656_31267.cpp: In function 'void DFS(int)':
0_0_35235656_31267.cpp:37:14: error: 'dfs' was not declared in this scope
         dfs(i);
              ^
0_0_35235656_31267.cpp: In function 'int main()':
0_0_35235656_31267.cpp:67:18: error: 'dfs' was not declared in this scope
             dfs(i);
                  ^