View Compilation Error

0_0_38147125_6574.cpp: In function 'int hungary()':
0_0_38147125_6574.cpp:31:31: error: 'memset' was not declared in this scope
  memset(link, -1, sizeof(link));
                               ^
0_0_38147125_6574.cpp: In function 'int main()':
0_0_38147125_6574.cpp:47:29: error: 'memset' was not declared in this scope
   memset(map, 0, sizeof(map));
                             ^