To find the factorial of given number using while loop

 Program:

#include<stdio.h>

#include<conio.h>

void main()

{

    int n;

    unsigned long fact=1;

    clrscr();

    printf("Enter a Number : ");

    scanf("%d", &n);

    while(n>=1)

    {

        fact = fact*n;

        n--;

    }

    printf("\n\nFactorial of %d is %lu", n, fact);

    getch();

}

Output:

Enter a Number : 5

Factorial of 5 is 120

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