View Compilation Error

0_0_21675418_23008.cpp: In function 'void hungary()':
0_0_21675418_23008.cpp:71:39: error: 'memset' was not declared in this scope
   memset(visited,false,sizeof(visited));
                                       ^
0_0_21675418_23008.cpp: In function 'int main()':
0_0_21675418_23008.cpp:84:39: error: 'memset' was not declared in this scope
   memset(visited,false,sizeof(visited));
                                       ^