C++第二次作业

#include<iostream.h>
void main()
{
int t,s;
cout<<"请输入你的体重(kg):";
cin>>t;
cout<<"请输入你的身高(cm):";
cin>>s;
if(t>(s-100)*1.2)
cout<<"超重";
if(t<(s-100)*0.8)
cout<<"超轻";
else
cout<<"正常"<<endl;
}


















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














#include<iostream.h>
#include<math.h>
void main()
{
double x1,y1,x2,y2,a,b,c;
cout<<"请输入第一个点的坐标:";
cin>>x1>>y1;
cout<<"请输入第二个点的坐标:";
cin>>x2>>y2;
a=(x1-x2)*(x1-x2);
b=(y1-y2)*(y1-y2);
c=sqrt(a+b);
cout<<c<<endl;
}