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Simple Example Program for Function to Find Factorial In C++

1 min read Updated June 30, 2026
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About this program

This is an example program in c function example programs. Read the concept first: C++ Function Basics, then study the code and output below.

Definition

A function is like a black box. It takes in input, does something with it, then spits out an answer.

Syntax

return_type function_name(argumnent)
{
 // body Of the Function
}

Simple Example Program Of Function Find Factorial Number

/*  Example Program For Simple Example Program Of Function Find Factorial Number In C++
    little drops @ thiyagaraaj.com

    Coded By:THIYAGARAAJ MP             */

#include<iostream>
#include<conio.h>

using namespace std;

// Simple factorial Function
int factorial(int var) {
    int fact = 1;
    for (int i = 1; i <= var; i++)
        fact = fact * i;
    return fact;
}

int main() {
    cout << "5 Factorial Number :" << factorial(5);
    getch();
    return 0;
}

Sample Output

5 Factorial Number :120

Learn the concept first, then study the code:

Frequently Asked Questions

What does this C++ program do?
It is a C++ example program that demonstrates Simple for Function to Find Factorial, including the complete source code and the expected sample output.
How do I compile and run this C++ program?
Save the code in a `.cpp` file, compile it with `g++ filename.cpp -o program`, then run it with `./program` (or `program.exe` on Windows).
What concepts does this example use?
This example uses loops to iterate over data and user-defined functions, illustrating a common pattern in C++ programming.

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