https://www.bilibili.com/video/av46302480/
萌新剪完之后感觉好绝望啊，求大佬指点指点QAQ

#include <iostream>
#include <math.h>
using namespace std;
int main()
{
int a,b,c;
cin>>a>>b>>c;
if(a-b>0)
{
if(b-c>0)
cout<<c<<" "<<b<<" "<<a;
else if(b-c<0)
{
if(a-c>0)
cout<<b<<" "<<c<<" "<<a;
else
cout<<b<<" "<<a<<" "<<a;
}
}
else if(a-b<0)
{
if(b-c<0)
cout<<a<<" "<<b<<" "<<c;
else if(b-c>0)
{
if(a-c>0)
cout<<c<<" "<<a<<" "<<b;
else
cout<<a<<" "<<c<<" "<<b;
}
}
else if(a=b)
cout<<a<<" "<<b<<" "<<c;

#include<iostream>
using namespace std;
int main(void)
{
int a, b, c,t=0;
cin >> a >> b >> c;
if (a > b) { t = a; a = b; b = t; }
if (a > c) { t = a; a = c; c = t; }
if (b > c) { t = b; b = c; c = t; }
cout <<a<<"->"<<b<<"->"<<c<<endl;
return 0;
}

#include<iostream>
using namespace std;
int main()
{
int a,b,c;
char d,e;
cin>>a>>d>>b>>e>>c;
if(d=='+')
if(c==a+b)
cout<<"ÕýÈ·"<<endl;
else
cout<<"´íÎó"<<endl;
if(d=='-')
if(c==a-b)
cout<<"ÕýÈ·"<<endl;
else
cout<<"´íÎó"<<endl;
if(d=='*')
if(c==a*b)
cout<<"ÕýÈ·"<<endl;
else
cout<<"´íÎó"<<endl;
if(d=='/')
if(c==a/b)
cout<<"ÕýÈ·"<<endl;
else
cout<<"´íÎó"<<endl;
return 0;
}

#include<iostream>
using namespace std;
int main()
{
int a,b,c;
char d,e;
cin>>a>>d>>b>>e>>c;
if(d=='+')
if(c==a+b)
cout<<"正确"<<endl;
else
cout<<"错误"<<endl;
if(d=='-')
if(c==a-b)
cout<<"正确"<<endl;
else
cout<<"错误"<<endl;
if(d=='*')
if(c==a*b)
cout<<"正确"<<endl;
else
cout<<"错误"<<endl;
if(d=='/')
if(c==a/b)
cout<<"正确"<<endl;
else
cout<<"错误"<<endl;
return 0;
}