Factorial of a number in ‘C’

Do you know how to find the factorial of a given number? The factorial of a given number can be found by calculating the product of the sequence of numbers till the number, beginning from 1.

As an example, factorial of 5 can be found as

5*4*3*2*1

which is equal to 120

Similarly, factorial of 6 is

6*5*4*3*2*1

which is equal to 720

How do we program this in ‘C’? Let us see below:

// Online C compiler to run C program online
#include <stdio.h>

int main() {
    // Write C code here
    printf("Finding the factorial of a number C\n");
    
      int i, j, k=1;
      
printf("Enter the number whose factorial you want to find\n");
      
    
    scanf("%d", &i);
    
    for (j=1; j<=i; j++)
    {
        k=k*j;
    }
    
    printf("%d", k);
    
    
    

    return 0;
}

This is the result you will get when you run the program in any compiler.

Finding the factorial of a number C
Enter the number whose factorial you want to find
6
720

=== Code Execution Successful ===

You can try running the above code by means of this online compiler

Online C Compiler – Programiz

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