does not have a definition for c# inheritance code example

Example 1: c# inheritance

class parent_class
{
  
}
class child_class : parent_class
{
//Will simply move Data and Methods from the parent_class to the child class.
}

Example 2: c# class inheritance constructor

public otherclass{

    public otherclass(a,b){
          a=0;
          b=1;
    }

}

public baseClass : otherclass{
  
  	public baseClass(string str,int a, int b): base(a,b){
    	str="whatever";
    }
  
}