C programme for factorial using while loop nd for loop

using while loop                                                

#include <stdio.h>
#include<conio.h>
void main()
{
int n,i=1,fact=1;
printf("enter a number");
scanf(""%d",&n);
while(i<=n)
{
fact=fact*i;
i=i+1;
}
printf("%d",&fact);
getch();
}

using for loop

#include <stdio.h>

#include<conio.h>

void main()

{

int n,i=1,f=1;

printf("enter a number");

scanf(""%d",&n);

for(i=1;i<=n;i++)

f=f*i;

printf("\n factorial of %d is %d \n",n,f);

getch();

}