c++上机作业-2

项目二 分段函数求值

#include<iostream>using namespace std;int main(){int x;cout<<"请输入x的值:";    cin>>x;if(x>=1)cout<<x-1;elsecout<<-x+1;}

项目三 两点之间的距离

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

项目四 模拟ATM机

#include<iostream>using namespace std;int main(){int m,x;cout<<"请输入密码m:";cin>>m;if(m=971001){cout<<"查询选项功能:";    cout<<"1.查询"<<endl;    cout<<"2.取款"<<endl;    cout<<"3.存款"<<endl;    cout<<"4.转帐"<<endl;    cout<<"0.退出"<<endl;    cout<<"功能选择";    cin>>x;    cout<<"谢谢您选择x号功能";}return 0;}