how to algorithm take an integer from the user and display the factorial of the number
1. Read the input integer from the user and store it in a variable, let's call it "number".
2. Initialize a variable "factorial" to 1.
3. Create a loop that starts at 1 and goes up to "number".
4. In each iteration, multiply "factorial" by the current loop value.
5. After the loop ends, display the value of "factorial" as the factorial of the input number.
Here's the algorithm in pseudocode:
```
Input: number (integer)
factorial = 1
for i in range(1, number+1):
factorial = factorial * i
Output: factorial
```
Alternatively, you can use recursion to calculate the factorial:
```
Input: number (integer)
function factorial(n):
if n == 1:
return 1
else:
return n * factorial(n-1)
factorial_of_number = factorial(number)
Output: factorial_of_number
```
To write an algorithm that takes an integer from the user and displays the factorial of the number, you can follow these steps:
1. Start the algorithm.
2. Prompt the user to enter an integer.
3. Read and store the input in a variable, let's call it 'num'.
4. Set a variable, let's call it 'factorial', to 1. This variable will store the factorial of the number.
5. Set up a loop to calculate the factorial.
6. Initialize a variable, let's call it 'i', to 'num'.
7. Start a loop that continues as long as 'i' is greater than 1.
8. Multiply 'factorial' by 'i' and store the result in 'factorial'.
9. Decrease the value of 'i' by 1.
10. Repeat steps 7-9 until 'i' becomes 1.
11. After the loop ends, output the value of 'factorial' as the factorial of the number 'num'.
12. End the algorithm.
Here is a sample algorithm written in pseudocode:
```
Algorithm: Calculate Factorial
1. Start
2. Display "Enter an integer:"
3. Read num
4. Set factorial = 1
5. Set i = num
6. Loop while i > 1
Do the following steps:
7. Set factorial = factorial * i
8. Set i = i - 1
9. End loop
10. Display "The factorial of", num, "is", factorial
11. End
```
This algorithm will prompt the user to enter an integer, calculate its factorial, and display the result.