View Compilation Error

0_0_13082331_30299.cpp:3:11: error: '::main' must return 'int'
 void main()
           ^
0_0_13082331_30299.cpp: In function 'int main()':
0_0_13082331_30299.cpp:7:24: error: 'memset' was not declared in this scope
  memset(bs,0,sizeof(bs));
                        ^