View Compilation Error

0_0_30254843_58.cpp: In function 'int main()':
0_0_30254843_58.cpp:83:33: error: 'memset' was not declared in this scope
   memset(vis, false, sizeof(vis));
                                 ^
0_0_30254843_58.cpp:107:5: error: expected primary-expression before '/' token
     /nhuanjie[ccc - 1] = '\0';
     ^
0_0_30254843_58.cpp:107:6: error: 'nhuanjie' was not declared in this scope
     /nhuanjie[ccc - 1] = '\0';
      ^
0_0_30254843_58.cpp:156:6: error: expected primary-expression before '/' token
      /nhuanjie[ccc - 1] = '\0';
      ^
0_0_30254843_58.cpp:156:7: error: 'nhuanjie' was not declared in this scope
      /nhuanjie[ccc - 1] = '\0';
       ^