View Compilation Error

0_0_20874486_11420.cpp:2:13: error: '::main' must return 'int'
  void main ()
             ^
0_0_20874486_11420.cpp: In function 'int main()':
0_0_20874486_11420.cpp:3:160: error: expected '}' at end of input
  {  unsigned int b, a, i=1;   while(scanf("%d %d",&a,&b)!=EOF)  {   for(i=1;;i++)   {    if(i%a==0&&i%b==0)    {     printf("%d\n",i);     break;     }    }   } 
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