View Compilation Error

0_0_35426478_10064.cpp: In member function 'void Hash::initialize()':
0_0_35426478_10064.cpp:64:54: error: 'memset' was not declared in this scope
     memset(hashkey_, false, (MAXH + 1) * sizeof(bool));
                                                      ^
0_0_35426478_10064.cpp: In function 'void dodp(int, int)':
0_0_35426478_10064.cpp:202:29: error: 'memset' was not declared in this scope
     memset(dp, 0, sizeof(dp));
                             ^