View Compilation Error

0_0_30464844_24002.cpp: In function 'int main()':
0_0_30464844_24002.cpp:43:16: error: expected primary-expression before ',' token
     memset(edge, 0, sizeof edge);
                ^
0_0_30464844_24002.cpp:43:32: error: expected primary-expression before ')' token
     memset(edge, 0, sizeof edge);
                                ^
0_0_30464844_24002.cpp:44:24: error: 's' was not declared in this scope
     while(!st.empty()) s.pop();
                        ^