#include<stdio.h>
#include<conio.h>
int factorial(int);
void main()
{
int n,result;
clrscr();
printf("enter the no.:");
scanf("%d",&n);
result=factorial(n);
printf("factorial of %d is %d",n,result);
getch();
}
int factorial(int n)
{
int f;
if(n==0||n==1)
{
return 1;
}
else
{
f=n*factorial(n-1);
return f;
}
}
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