jiecheng1.cpp

这是计算阶乘的例子

// jiecheng1.cpp : Defines the entry point for the console application.
//
#include <stdafx.h>
//#include<stdlib.h>
#include<stdio.h>
int main(void)
{
	unsigned long n=0,fact=1;
	printf("Input a positive number:");
	scanf("%d",&n);
	for(unsigned int k=1;k<=n;k++)
	
		fact=fact*k;
	printf("the factorial of %d is %d:\n",n,fact);
	return 0;
}