View Compilation Error

0_0_25429015_10780.cpp: In function 'bool BFS(int, int)':
0_0_25429015_10780.cpp:15:39: error: 'memset' was not declared in this scope
     memset(visit, false, sizeof(visit));
                                       ^
0_0_25429015_10780.cpp: In function 'int main()':
0_0_25429015_10780.cpp:42:37: error: 'memset' was not declared in this scope
         memset(edge, 0, sizeof(edge));
                                     ^