C program to calculate the factorial of a given number

#include <stdio.h>
int Fact(int); // FUNCTION DECLARATION
int main()
{
int num, val;
printf("\n Enter the number: ");
scanf("%d", &num);
val = Fact(num);
printf("\n Factorial of %d = %d", num, val);
return 0;
}
int Fact(int n)
{
if(n==1)
 return 1;
else
return (n * Fact(n–1));
}