View Compilation Error

0_0_38097961_8441.cpp: In function 'int hungary()':
0_0_38097961_8441.cpp:32:38: error: 'memset' was not declared in this scope
     memset(linker, -1, sizeof(linker));
                                      ^
0_0_38097961_8441.cpp: In function 'int main()':
0_0_38097961_8441.cpp:45:31: error: 'memset' was not declared in this scope
         memset(g, 0, sizeof(g));
                               ^