View Compilation Error

0_0_38477272_5557.cpp: In function 'void dfs(int, int)':
0_0_38477272_5557.cpp:25:31: error: expected ')' before ';' token
         if (int v = edges[i].f; v != p) {
                               ^
0_0_38477272_5557.cpp:25:38: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
         if (int v = edges[i].f; v != p) {
                                      ^
0_0_38477272_5557.cpp:25:39: error: expected ';' before ')' token
         if (int v = edges[i].f; v != p) {
                                       ^