Ruby program to implement setter method using 'attr_writer' accessor

class Sample
    # constructor
    def initialize(val)
        @ins_var = val;
    end
    
    # Getter method
    attr_reader:ins_var 
    
    # accessor set method
    attr_writer :ins_var
end

obj = Sample.new("Hello");

val = obj.ins_var;
print "Value is: ",val,"\n";

obj.ins_var = "Hii";
val = obj.ins_var;
print "Value is: ",val,"\n";

Output:

Value is: Hello
Value is: Hii