View Compilation Error

0_0_29978509_18575.cpp: In function 'int dfs(int, int)':
0_0_29978509_18575.cpp:18:17: error: 'edge' was not declared in this scope
         int v = edge[i].to;
                 ^
0_0_29978509_18575.cpp: In function 'int main()':
0_0_29978509_18575.cpp:45:21: error: 'adde' was not declared in this scope
             adde(a,b);
                     ^