View Compilation Error

0_0_33699020_16016.cpp: In member function 'bool EdmondsKarp::BeelmanFord(int, int, long long int&, long long int&)':
0_0_33699020_16016.cpp:35:33: error: 'memset' was not declared in this scope
         memset(inq,0,sizeof(inq));
                                 ^
0_0_33699020_16016.cpp: In function 'int main()':
0_0_33699020_16016.cpp:87:33: error: 'memset' was not declared in this scope
         memset(arr,0,sizeof(arr));
                                 ^