View Compilation Error

0_0_37999648_3800.cpp:15:19: error: expected unqualified-id before ';' token
 int low[N],dfn[N],;
                   ^
0_0_37999648_3800.cpp: In function 'void init2()':
0_0_37999648_3800.cpp:82:12: error: 'instack' was not declared in this scope
     memset(instack,0,sizeof(instack));
            ^