// #include "pch.h"
#include <iostream>
using namespace std;
// Functions prototypes
int summa(int a, int b);
double summa(double a, double b);
float summa(float a, float b);
long long factorial(long n);
long long factorialR(long n);
int main()
{
long n = 5;
cout << endl << summa(1, 2); // function call
cout << endl << summa(1.0f, 2.0f); // function call
cout << endl << summa(1.0, 2.0); // function call
cout << endl << endl << "Call of function with ITERATIVE calculation of factorial" << n << "! = " << factorial(n); // function call
cout << endl << endl << "Call of function with RECURSIVE calculation of factorial" << n << "! = " << factorialR(n); // function call
cout << endl << endl << endl;
return 0;
}
// functions definitions
long long factorialR(long n)
{
if (n > 1)
return n * factorialR(n - 1);
else
return (long long)1;
}
long long factorial(long n) // function header
{ // begin of function body
double result = 1;
for (double i = 2; i <= n; i++)
result = result * i;
return (long long)result; // value return
} // end of function body
int summa(int a, int b)
{
cout << endl << "This fuction summa returns result of type: int\t";
return a + b;
}
double summa(double a, double b)
{
cout << endl << "This fuction summa returns result of type: double\t";
return a + b;
}
float summa(float a, float b)
{
cout << endl << "This fuction summa returns result of type: float\t";
return a + b;
}
