Today, we will learn the real

In mathematics, the

5! = 5 x 4 x 3 x 2 x 1 = 120

Note: The value of 0! is 1.

/*

Write a

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and For Good Notes

Visit www.computergap.com

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*/

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int number, counter;

long int factorial;

cout<<"\n Enter the Number = ";

cin>>number;

factorial = 1;

for (counter = 1; counter <= number; counter++)

factorial = factorial * counter;

cout<<"\n\n ----------- Results ------------";

cout<<"\n\n The Factorial of the number "<<number<<"\n is "<<factorial;

getch();

}

###

#include<conio.h> //include header files, conio.h is for clrscr();

void main()

{

clrscr(); //clear the output screen

int number, counter; // declare variable number for input,

//counter is loop control counter variable

long int factorial; // factorial may be a big number so declared as long

cout<<"\n Enter the Number = "; // print message

cin>>number; // input number

factorial = 1; // intialize factorial to one

// now since 3!=1 x 2 x 3

// and n! = 1 x 2 x3 ..... x n, therfore factorial calculaton loop may be from 1 to n

// so that we can multiply all numbers from 1 to n

// and place the result of these products in factorial

for (counter = 1; counter <= number; counter++)

factorial = factorial * counter;

cout<<"\n\n ----------- Results ------------"; //print message

// print result of factorial program

cout<<"\n\n The Factorial of the number "<<number<<"\n is "<<factorial;

getch(); // to stay outpput screen as long as we press a key

} // end

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You can read the use of Writing, compiling, executing programs in C++ in Turbo C++ here

You can find calculate factorial of a number program with do while loop here

You can find calculate factorial of a number program using Recursion ( Recursive Factorial Function )

**, in details.**__logic behind C++ Program Factorial of a Given Number__In mathematics, the

**factorial of a non-negative integer n**, denoted by n!, is the product of all positive integers less than or equal to n. For example,5! = 5 x 4 x 3 x 2 x 1 = 120

Note: The value of 0! is 1.

C++ Program Factorial of given number input by user at run time |

Write a

**C++ Program**to input a positive number**Calculate and Display Factorial of this number****by For Loop.**For Free C++ Programming Techniques (Example C++ Programs with Explainations), visit

Www.EasyCppProgramming.Blogspot.Com

and For Good Notes

Visit www.computergap.com

Visit Www.ForFreeEducation.Blogspot.Com

*/

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int number, counter;

long int factorial;

cout<<"\n Enter the Number = ";

cin>>number;

factorial = 1;

for (counter = 1; counter <= number; counter++)

factorial = factorial * counter;

cout<<"\n\n ----------- Results ------------";

cout<<"\n\n The Factorial of the number "<<number<<"\n is "<<factorial;

getch();

}

C++ Program to find Factorial of given Number |

###

Explain Logic of The Calculate Factorial of a Number, C++ Program

In the following lines, the above mentioned factorial program is further explained with the help of comments / use of documentation in the

**factorial program in C++**

#### How Factorial of a Number in C++ Program Works:

#include<iostream.h> //include header files, iostream is for cin, cout#include<conio.h> //include header files, conio.h is for clrscr();

void main()

{

clrscr(); //clear the output screen

int number, counter; // declare variable number for input,

//counter is loop control counter variable

long int factorial; // factorial may be a big number so declared as long

cout<<"\n Enter the Number = "; // print message

cin>>number; // input number

factorial = 1; // intialize factorial to one

// now since 3!=1 x 2 x 3

// and n! = 1 x 2 x3 ..... x n, therfore factorial calculaton loop may be from 1 to n

// so that we can multiply all numbers from 1 to n

// and place the result of these products in factorial

for (counter = 1; counter <= number; counter++)

factorial = factorial * counter;

cout<<"\n\n ----------- Results ------------"; //print message

// print result of factorial program

cout<<"\n\n The Factorial of the number "<<number<<"\n is "<<factorial;

getch(); // to stay outpput screen as long as we press a key

} // end

You can download and install Turbo C++ 3.0 Compiler here

You can read the use of Writing, compiling, executing programs in C++ in Turbo C++ here

# Download and Install Turbo C++ Full Screen Windows 7 Vista

You can find calculate factorial of a number program with while loop hereYou can find calculate factorial of a number program with do while loop here

You can find calculate factorial of a number program using Recursion ( Recursive Factorial Function )

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