# How do you find the factorial of a number using a while loop in C++?

## How do you find the factorial of a number using a while loop in C++?

Working:

- First the computer reads the number to find the factorial of the number from the user.
- Then using while loop the value of ‘i’ is multiplied with the value of ‘f’.
- The loop continues till the value of ‘i’ is less than or equal to ‘n’. Finally the factorial value of the given number is printed.

## How do you write a factorial program for a loop in C++?

The factorial of a positive integer n is equal to 1*2*3*…n. You will learn to calculate the factorial of a number using for loop in this example….Example: Find Factorial of a given number.

i <= 4 | fact *= i |
---|---|

2 <= 4 | fact = 1 * 2 = 2 |

3 <= 4 | fact = 2 * 3 = 6 |

4 <= 4 | fact = 6 * 4 = 24 |

5 <= 4 | Loop terminates. |

**Does Do While loop use factorial in C?**

Simple Steps

- Prompt user to enter a number to find factorial using printf function.
- Read the number and store into a variable, say num using scanf function.
- Declare an int variable factorial which will store the result and initialize it to 1.
- Us a for loop, and run it from i=1 to i< =num.

### How to find factorial using for and while loop?

To find the factorial, we will run one for loop from 1 to that number. On each iteration, we will multiply the numbers to get the final factorial. Below is the complete program : Here, the program will ask the user to enter a number. It reads the number and stores it in variable number. We are running one for loop from i = 1 to i = number.

### How to find factorial of a number using C program?

C Program. factorial. while. Factorial is a product of all positive numbers from 1 to n, here n is a number to find factorial. Ex: 5! = 5*4*3*2*1. You can also check factorial of a program using for loop , factorial of a program using Recursion , Flowchart to Find Factorial of a Number and Factorial of a number using Functions in C.

**How to print factorial in while statement in C?**

The ‘i’ value is multiplied with ‘calcfact’ variable and the new value will be stored in ‘calcfact’ variable. calcfact*=i; or calcfact = calcfact*i; When while statement gets false, the compiler gets out of the while loop and prints the factorial of the entered number.

#### What is the factorial of the value of 0?

The value of 0! is 1 according to the convention for an empty product. ? First the computer reads the number to find the factorial of the number from the user. Then using while loop the value of ‘i’ is multiplied with the value of ‘f’.