View Compilation Error

0_0_28891575_26244.cpp: In function 'int KM()':
0_0_28891575_26244.cpp:41:33: error: 'memset' was not declared in this scope
  memset(match, -1, sizeof(match));
                                 ^
0_0_28891575_26244.cpp: In function 'int main()':
0_0_28891575_26244.cpp:89:34: error: 'memset' was not declared in this scope
   memset(white, -1, sizeof(white));
                                  ^