c++第二次上机实验三道题目

#include<iostream.h>
void main()
{
int a,b;
cout<<"请输入您的体重";cin>>a;
cout<<"请输入您的身高";cin>>b;
if(a>(b-100)*1.2)
cout<<"超重";
if(a<(b-100)*0.8)
cout<<"超轻";
if((b-100)*0.8<a<(b-100)*1.2)
cout<<"正常";
}

#include<iostream.h>
void main()
{
int x,y;
cout<<"x=";cin>>x;
if(x>=1)
y=x-1;
if(x<1)
y=1-x;
cout<<"y="<<y;
}

#include<iostream.h>
void main()
{
int x1,x2,y1,y2,l;
cout<<"x1="<<endl;
cout<<"x2="<<endl;
cout<<"y1="<<end1;
cout<<"y2="<<endl;
l=(x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);
cout<<"l="<<endl;
}