c code factorial function
#include <stdio.h>
int fact(int);
void main()
{
int no,factorial;
printf("Enter a number to calculate it's factorialn");
scanf("%d",&no);
factorial=fact(no);
printf("Factorial of the num(%d) = %dn",no,factorial);
//printf("Factorial of the num(%d) = %dn",no,fact(no));//another way of calling a function//comment above two lines if you want to use this
}
int fact(int n)
{
int i,f=1;
for(i=1;i<=n;i++)
{
f=f*i;
}
return f;
}