--assign expression
Class A {
	a:Int;
	man():Int { 
         a<-1          
	};

	man1():Bool {
         let a:Bool, b:Bool  in
            {
            a<-true; b<-false;  
            }
	};
};

Class B {
	r:Int;
	man4():Int { 
            r<-1  
	};
};

class C inherits D {
   man1():Object {
     {
     a<- 45;   
     b<-true;     
     let b:Int in
         b<-1;  

     } 
   };
};

class D {
   a:Int;
   b:Bool;
};

class Main{
	main():Int{
	1
	};
};