Source3.cpp

//Practical Lab Assignment-7(Week 9)
//ID:U1910049 Name:Rustam Zokirov
//Program to sum the series up to n

#include <iostream>
#include <math.h>
using namespace std;
double qwerty(double n, double sum, double fact) {
	for (int i = 1; i <= n; i++) {
		fact = fact * i;//calculating the factorial of the numbers
		sum += (pow(i,i) / (fact));//executing the sum of numbers
	}//"pow" is raising 'i' to power 'i'
	return sum;//
}//end function qwerty

int main() {
	double n;
	double sum=0;
	double fact = 1;
	cout << "Please ebter the number: ";//outputing and inputing the number
	cin >> n;
	if (n>0)//the program will calculate the sum when numbers is positive
		cout << "Sum is: " << qwerty(n, sum, fact) << endl;//calling the function qwerty
	else//when the number is negative 'else' will work
		cout << "INVALID INPUT!" << endl;
	system("pause");
	return 0;
}//ending the program successfully