第二次C++作业

来源：互联网发布：汉桓帝知乎编辑：程序博客网时间：2024/05/05 23:19

1.分段函数求值

#include<iostream.h>#include<math.h>void main() {int x,y;cout<<"请输入x:";cin>>x;if(x>=1)y=x-1;else y=-x+1;cout<<"y的值为:"<<y;}

2.两点距离

#include<iostream.h>#include<math.h>void main(){ double x1,y1,x2,y2,c,d; cout<<"请输入第一点坐标：";cin>>x1>>y1; cout<<"请输入第二点坐标：";cin>>x2>>y2;    d=(x2-x1)*(x2-x1)+(y2-y1)*(y2-y1); c=sqrt(d);  cout<<"两点之间的距离为:"<<c<<endl;}

3.模拟ATM

#include<iostream.h>void main(){int a,x;cout<<"李氏银行欢迎您\n";cout<<"用户输入密码:\n";cin>>a;cout<<"0.退出\n";cout<<"1.查询\n";cout<<"2.取款\n";cout<<"3.存款\n";cout<<"4.转帐\n";cout<<"用户输入功能选择:\n";cin>>x;switch(x){    case'0':cout<<"退出\n";break;case'1':cout<<"查询\n";break;case'2':cout<<"取款\n";break;case'3':cout<<"存款\n";break;case'4':cout<<"转帐\n";break;}cout<<"谢谢，您选择了"<<x<<"号功能"<<endl;}

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