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In this example we show you how to display the factorial of a number in C++
The factorial of a non negative number is the product of all the integers from 1 to that number.
For example, the factorial of 6 is 1*2*3*4*5*6 = 720 .
Example
#include <iostream>
using namespace std;
int main()
{
cout << "Factorial of a number\n";
//variable declaration
int i,myNumber;
int factorial=1;
//take input from the user
cout << "Enter the number to find the factorial for: ";
cin >> myNumber;
//find the factorial by multiplying all the numbers from 1 to n
for (i = 1; i <= myNumber; i++)
{
factorial *= i;
}
cout << "\n\nThe Factorial of " << myNumber << " is: " << factorial;
cout << "\n";
return 0;
}
When you run this you will see something like this
Factorial of a number Enter the number to find the factorial for: 6 The Factorial of 6 is: 720