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C++ Program to Find Factorial of a number using recursion

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robaa
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2022-11-26
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Write a C++ Program to Find Factorial of a number using recursion. Here’s simple C++ Program to Find Factorial of a number using recursion in C++ Programming Language.

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robaa
2022-11-26
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What are Functions ?

Function is a block of statements that performs some operations. All C++ programs have at least one function – function called “main()”. This function is entry-point of your program.

 
 

A function declaration tells the compiler about a function’s name, return type, and parameters. A function definition provides the actual body of the function.

Defining a Function : :

The general form of a C++ function definition is as follows:

return_type Function_Name( list of parameters )
{
//function’s body
}
  • return_type : suggests what the function will return. It can be void, int, char, some pointer or even a class object.
  • Function_Name : is the name of the function, using the function name it is called.
  • Parameters : are variables to hold values of arguments passed while function is called. A function may or may not contain parameter list.
  • Function body : is he part where the code statements are written.

Below is the source code for C++ Program to Find Factorial of a number using recursion which is successfully compiled and run on Windows System to produce desired output as shown below :

 

SOURCE CODE : :

/* C++ Program to Find Factorial of a number using recursion */

#include<iostream>
using namespace std;

int factorial(int n);

int main()
{
    int n;

    cout << "\nEnter any positive integer :: ";
    cin >> n;

    cout << "\nFactorial of [ " << n << " ]  =  [ " << factorial(n)<<" ]\n";

    return 0;
}

int factorial(int n)
{
    if(n > 1)
        return n * factorial(n - 1);
    else
        return 1;
}

OUTPUT : :

/* C++ Program to Find Factorial of a number using recursion */

Enter any positive integer :: 8

Factorial of [ 8 ]  =  [ 40320 ]

Process returned 0

Above is the source code for C++ Program to Find Factorial of a number using recursion which is successfully compiled and run on Windows System.The Output of the program is shown above .

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