View Compilation Error

0_0_37089157_13752.cpp: In function 'int main()':
0_0_37089157_13752.cpp:37:43: error: 'memset' was not declared in this scope
         memset(indegree,0,sizeof(indegree));
                                           ^
0_0_37089157_13752.cpp:38:27: error: expected ';' before ')' token
         for(int i=0;i<=505){
                           ^