8-19.cpp

C程序设计（第三版）程序第8章函数源代码 习题答案 谭浩强

#include <stdio.h>
void main()
{long fac(long);
 long i,n;
 scanf("%ld",&n);
 for(i=1;i<=n;i++)
   printf("%ld!=%ld\n",i,fac(i));
}
long fac(long n)
{register long i,f=1;            
 for (i=1;i<=n;i++)
   f=f*i;
   return (f);
}