2.3-2.txt

来自「介绍C程设计的一典型案例：例如编写一些小游戏」· 文本 代码 · 共 28 行

#include<stdio.h>
int main(void)
{
	int i,m,n;
	double sum;
	sum=0;
	printf("Enter m:");
	scanf("%d",&m);
	printf("Enter n:");
	scanf("%d",&n);
	if(m<=0 && n<=0)
	{
		printf("The number you enter is fault!\n");
	}
	if(m<=n)
	{
		for(i=m;i<=n;i++)
		{
			sum=sum+1.0/i;
		}
		printf("sum=%.3lf\n",sum);
	}
	else
	{
		printf("The number you enter is fault!\n");
	}
	return 0;
}