# C++ Exercises: Find the factorial of a number

## C++ For Loop: Exercise-7 with Solution

Write a program in C++ to find the factorial of a number.

**Visual Presentation:**

**Sample Solution** :-

**C++ Code :**

```
#include <iostream> // Preprocessor directive to include the input/output stream header file
using namespace std; // Using the standard namespace to avoid writing std::
int main() // Start of the main function
{
int num1, factorial = 1; // Declaration of integer variables 'num1' and 'factorial' initialized to 1
cout << "\n\n Find the factorial of a number:\n"; // Display a message indicating the purpose
cout << "------------------------------------\n"; // Display a separator line
cout << " Input a number to find the factorial: "; // Prompting the user to input a number
cin >> num1; // Reading the number entered by the user
for (int a = 1; a <= num1; a++) // Loop to calculate the factorial
{
factorial = factorial * a; // Calculating factorial by multiplying 'factorial' with 'a'
}
cout << " The factorial of the given number is: " << factorial << endl; // Displaying the factorial of the entered number
return 0; // Indicating successful completion of the program
}
```

Sample Output:

Find the factorial of a number: ------------------------------------ Input a number to find the factorial: 5 The factorial of the given number is: 120

**Flowchart: **

**C++ Code Editor:**

** Contribute your code and comments through Disqus.**

**Previous:** Write a program in C++ to find prime number within a range.

**Next:** Write a program in C++ to find the last prime number occur before the entered number.

**What is the difficulty level of this exercise?**

**It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.**

https://www.w3resource.com/cpp-exercises/for-loop/cpp-for-loop-exercise-7.php

**Weekly Trends and Language Statistics**- Weekly Trends and Language Statistics