5-9

#include<stdio.h>
double fact_s(int n);
int main(void)
{
int i,n;
printf("Input n:");
scanf("%d",&n);
for(i=1;i<=n;i++)
printf("%3d!=%.0f\n",i,fact_s(i));

return 0;
}
double fact_s(int n)
{
static double f=1;
f=f*n;

return(f);
}