/*
1.3编程基础之算术表达式与顺序执行 06 甲流疫情死亡率
http://noi.openjudge.cn/ch0103/06/
*/
#include<iostream>
using namespace std;
int main()
{
	int a,b;
	
	cin>>a>>b;
	
	double ans;
	
	ans=b*1.0/a*100;
	
	printf("%.3lf%%\n",ans);
	
	return 0;
}

---

 

---

 

 

---

python3代码 

a, b = map(int, input().split())
print('%.3f%%' % (b*100/a))

 转自

python && C++ NOI编程题解1.3

https://blog.csdn.net/yigezzchengxuyuan/article/details/86616733