View Compilation Error

0_0_36062590_26034.cpp: In function 'int setPossibleDigits(int, int, int)':
0_0_36062590_26034.cpp:13:41: error: 'memset' was not declared in this scope
     memset(possible, 0, sizeof(possible));
                                         ^
0_0_36062590_26034.cpp: In function 'int main()':
0_0_36062590_26034.cpp:59:35: error: 'memset' was not declared in this scope
         memset(map, 0, sizeof(map));
                                   ^