C++实验2-分级函数求值、两点距离、模拟ATM

一、分级函数求值

# include <iostream>
using namespace std;
int main()
{
	int x,y;
	cout<<"请输入x"<<endl;
	cin>>x;
	if(x>=1)
	y=x-1;
	else
	y=1-x;
	cout<<y;
	return 0;
}

二、两点距离

# include<cmath>
# include <iostream>
using namespace std;
int main()
{
	double x1,y1,x2,y2,d;
	cout<<"请输入两点坐标"<<endl;
	cin>>x1>>y1>>x2>>y2;
	d=sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
	cout<<d<<endl;
	return 0;
}