Run id: 114757

Main.cc: In function 'int main()':
Main.cc:5:7: error: 'r' was not declared in this scope
  cin>>r;  
       ^
Main.cc:6:3: error: 's' was not declared in this scope
   s=PAI*r*r;
   ^
Main.cc:7:33: error: 'd' was not declared in this scope
   cout<