## Factorial Program in C

### Understanding Factorials in Mathematics

Let’s take a moment to define factorials before we delve into the world of programming. The sum of all positive integers that are less than or equal to N is known as a factorial of a non-negative integer, indicated by the symbol N!. The factorial of 5, for instance, is calculated as 5 4 3 2 1, yielding a value of 120.

### What C Programming Can Do

C programming is a popular language choice for developers all around the world because of its effectiveness and adaptability. We can quickly and easily find the factorial of N integers by making use of C, and the results will be accurate.

## C programming for the factoring program

The factorial of a number can be calculated using C programming, but it requires writing clear, reliable code that can handle a variety of situations and offer the best outcome. Let’s look at an example of some code that does this:

**#include <stdio.h>
unsigned long long factorial(unsigned int n) {
if (n == 0 || n == 1)
return 1;
else
return n * factorial(n - 1);
}
int main() {
unsigned int num;
printf("Enter a non-negative integer: ");
scanf("%u", &num);
unsigned long long result = factorial(num);//Factorial Program in C
printf("The factorial of %u is %llu\n", num, result);
return 0;
}**

### Analyzing the C Code

Let’s break down the code to understand how it calculates the factorial:

- Investigating the C Code
- Let’s dissect the code to see how the factorial is computed:
- An unsigned long long value is the output of the factorial function, which accepts an unsigned integer n as input.
- We determine if n is 0 or 1 inside the factorial function. Since the factorial of 0 and 1 is always 1, if it is, we return 1.
- We repeatedly run the factorial function with n – 1 as the argument and multiply it by n if n is neither 0 or 1.
- We ask the user to input a non-negative integer in the main function.
- Using scanf, we extract data from the user’s input and store it in the num variable.
- The factorial function is then used with num as the parameter, and the outcome is saved in the result variable.
- Finally, we use printf to output the calculated factorial.//Factorial Program in C

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We have now created a C program that accurately determines the factorial of a given number. But in order to rank higher than competing pages on Google, we must supply more information than just code snippets.

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