passing messages between objects ?

[mohamedeltair]

if you have a class named College which has a method "void getFees(double)", and another class named Student which have a method "double payFees()" and you wrote this code in the main for example:
College c();
Student s();
c.getFees(s.payFees());
is this a correct example of passing messages between objects ?

[gunnerfunner]

The short answer is yes but it's a good idea to always try and write some code to check it for yourself, such as:

#include<iostream>
using namespace std;

class College{
	private:
	
	public:
		void getFees(double d);
};
class Student{
	private:
		
	public:
		double payFees();
};
int main(){
	College c;
	Student s;
	c.getFees(s.payFees());
}
void College::getFees(double d){
	cout<<"Fees are: "<<d<<endl;
}
double Student::payFees(){
	double Fees;
	cout<<"Enter fees: "<<endl;
	cin>>Fees;
	return Fees;
}

One thing to bear in mind is that payFees() returns a local variable and so you cannot return an reference in this case