View Compilation Error

0_0_8648411_31433.c:9: error: syntax error before "node"
0_0_8648411_31433.c:11: error: syntax error before '*' token
0_0_8648411_31433.c: In function `dfs':
0_0_8648411_31433.c:27: error: `node' undeclared (first use in this function)
0_0_8648411_31433.c:27: error: (Each undeclared identifier is reported only once
0_0_8648411_31433.c:27: error: for each function it appears in.)
0_0_8648411_31433.c:27: error: `n' undeclared (first use in this function)
0_0_8648411_31433.c: In function `main':
0_0_8648411_31433.c:44: error: 'for' loop initial declaration used outside C99 mode
0_0_8648411_31433.c:48: error: request for member `v' in something not a structure or union
0_0_8648411_31433.c:49: error: request for member `next' in something not a structure or union