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最新推荐文章于 2025-05-17 15:18:37 发布

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最新推荐文章于 2025-05-17 15:18:37 发布

阅读量228

点赞数 1

文章标签：算法

本文链接：https://blog.youkuaiyun.com/2301_80289247/article/details/144777669

版权

1000

#include <bits/stdc++.h>
using namespace std;
int main() {
    //定义两个变量
    int a,b;
    cin>>a>>b;
    //计算它们的和，并输出
    cout<<a+b;
    return 0;
}

1002

#include <iostream>
using namespace std;
int main()
{
	int a;
	cin >> a;
	int sum = 0;
	for (int i = 1; i <= a; i++){
		sum += i;
	}
	cout << sum;
	return 0;
}

1003

#include <iostream>
using namespace std;
int main(){
	int a;
	cin >> a;
	int sum = 0;
	for (int i = 1; i <= a; i++,i++){
		sum += i;
	}
	cout << sum;
	return 0;
}

1004

#include <iostream>
using namespace std;
int main()
{
	int a;
	cin >> a;
	int sum = 1;
	for (int i = 1; i <= a; i++){
		sum = i*sum;
	}
	cout << sum;
	return 0;
}

1005

#include<bits/stdc++.h>
using namespace std;
int main()
{
	double n,x=3.1415926;
	cin >> n;
    cout<<fixed<<setprecision(2)<<n*n*x<<endl;
    cout<<fixed<<setprecision(2)<<x*2*n<<endl;
	return 0;
}