tiny C++ OOP demonstration

fish.cpp

#include <iostream>  //the library we will be using
using namespace std;//no need to add the 'std::' scope

class Fish{
	//Not the proper way to define a class 
	//	should be in a separate fish.h file with an implementation fish.cpp file
	private:
		int _length;//how long
		string _name, _type;
		
	public:
		//fishy functions:
		Fish(string type, string name, int length);//constructor
		void showfish();//depict the fish
		void aboutfish();//give some stats on the fish
		//length functions:
		void grow(int length){_length+=length;}//make bigger
		int getlength(){return _length;}
		
		//name functions:
		string getname(){return _name;}
		void setname(string name){_name=name;}//change the fish's name
		
		//type functions:
		string gettype(){return _type;}	
};

Fish::Fish(string type, string name, int length=1){
	_type=type;
	_name=name;
	_length=length;	
}

void Fish::showfish(){//rough(text) depiction of fish
	cout<<"<";//print head
	for(int i=0;i<_length;i++){//number of equal-signs = length
		cout<<"=";
	}cout<<"><\n";//print tail
}

void Fish::aboutfish(){//prints some fishy statistics
	cout<<"~~About Fish~~~~~~~~\n";
	cout<<"Name:"<<getname() <<"\nType: " <<gettype() <<"\nLength: "<<getlength() <<"\nLooks like: ";
	showfish();
	cout<<"~~~~~~~~~~~~~~~~~~~~\n";
}

int main(){
	Fish bubbles("goldfish","Bubbles",8);
	bubbles.showfish();
	bubbles.aboutfish();
	return 0;	
}