#include <iostream>
using namespace std;

int fsum(int a, int b) {
	int sum = a + b;
	return sum;
}

struct person {
	string name;
	double salary;
	double number_of_hours;
	double month_salary;
};


double calc_salary(double salary, double number_of_hours) {
	double sal = salary * number_of_hours;
	return sal;
}

void display_person(person tmp) {
	cout <<"Name: "<< tmp.name<<endl;
	cout <<"Salary: "<<tmp.salary<<endl;
	cout <<"Number of hours: "<< tmp.number_of_hours<<endl;
	cout <<"Month salary: "<< tmp.month_salary<<endl;
}

person fill_person(void) {
	person p1;
	cout << "Put your name: ";
	cin >> p1.name;
	cout << "Put your salary per hour: ";
	cin >> p1.salary;
	cout << "How many hours did you worked?: ";
	cin >> p1.number_of_hours;
	p1.month_salary=calc_salary(p1.salary, p1.number_of_hours);
	cout << p1.name << " your month salary is: " << calc_salary(p1.salary, p1.number_of_hours)<<endl;
	display_person(p1);
	return p1;
}

double mean(person p[], int a) {
	double temp=0;
	for(int i = 0; i <= a; i++) {
		temp += p[i].month_salary;
	}
	return temp / a;
}


int main(){
	person p[3] = {
		{"first",4,4,16},
		{"second", 8, 8, 64},
		{"third", 5, 5, 25}
	};
	cout<<mean(p, 3);
	/*int a, b, sum;
	cin >> a;
	cin >> b;
	sum = fsum(a, b);
	cout << sum;*/
	//person p1=fill_person();

}