C++第2次作业

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1.模拟取款机

#include<iostream>using namespace std;int main(){    int code;    cout<<"草民银行欢迎您"<<endl;    cout<<"请输入密码:";    cin>>code;    if(code==941204)    {        cout<<"1.查询"<<endl;        cout<<"2.取款"<<endl;        cout<<"3.存款"<<endl;        cout<<"4.转账"<<endl;        cout<<"0.退出"<<endl;    }    else        cout<<"密码错误请重新输入";    return 0;}

2.求两个点之间的距离

#include<iostream>#include<cmath>using namespace std;int main(){    double x1,x2,y1,y2,d;    cout<<"输完第一个的点请按回车<<""\n";    cout<<"输入第一个点：";    cin>>x1>>y1;    cout<<"输入第二个点：";    cin>>x2>>y2;    d=sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));    cout<<d<<endl;    return 0;}

3.分段函数求值

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

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