Factorial Using Function Example

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Program In C++
#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 Functionlong factorial(int n)
{
int counter;
long fact = 1;
//for Loop Block
for (int counter = 1; counter <= n; counter++)
{
fact = fact * counter;
}
return fact;
}

 

Output :
Enter the Number :6
6 Factorial Value Is 720

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