Question

Write a program to find factorial using function in C++ ( With Explanation of Program )

Answer 1

In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example,

6! = 6 x 5 x 4 x 3 x 2 x 1 = 720

The value of 0! is 1, according to the convention for an empty product.

Factorial Using Function Example Program

/* Example Program For Factorial Value Using Function In C++ little drops @ thiyagaraaj.com Coded By:THIYAGARAAJ MP */ #include<iostream> #include<conio.h> using namespace std; //Function long factorial(int); int main() { // Variable Declaration int counter, n; // Get Input Value cout << "Enter the Number :"; cin>>n; // Factorial Function Call cout << n << " Factorial Value Is " << factorial(n); // Wait For Output Screen getch(); return 0; } // Factorial Function long factorial(int n) { int counter; long fact = 1; //for Loop Block for (int counter = 1; counter <= n; counter++) { fact = fact * counter; } return fact; }

Sample Output

Enter the Number :6 6 Factorial Value Is 720