How to code factorial using while loop?

Answer 1

You have not indicated which programming language you are using to find factorial of a given number. If you want to use the C language, you can get the factorial with the following code (you may use the same logic for some other programming language):

#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,f;
f=i=1;
clrscr();
printf("Enter a Number to Find Factorial: ");
scanf("%d",&n);
while(i<=n)
{
f*=i;
i++;
}
printf("The Factorial of %d is : %d",n,f);
getch();
}

Answer 2

int n = 1;
int i = 0;
int m = 10; //should be input
while(i < m){
n *= i;
i++;
}
cout<<n;

with a for loop it would be a little shorter and easier to understand:
int n = 1;
int m = 10; //should be input
for(int i = 0; i < m; i++){
n *= i;
}
cout<<n

Answer 3

Python

Answer 4

thank you for answering