引用作形参--输入三个整数，按从大到小排序

#include <iostream>using namespace std;int Fx(int x,int y,int z);int main(){    int a,b,c;    cin>>a>>b>>c;    Fx(a,b,c);    return 0;}int Fx(int x,int y,int z){    if(x>y&&y>z)    cout<<x<<"  "<<y<<"  "<<z<<endl;    else if (x>z&&z>y)    cout<<x<<"  "<<z<<"  "<<y<<endl;    else if (y>x&&x>z)    cout<<y<<"  "<<x<<"  "<<z<<endl;    else if (y>z&&z>x)    cout<<y<<"  "<<z<<"  "<<x<<endl;    else if (z>y&&y>x)    cout<<z<<"  "<<y<<"  "<<x<<endl;    else if(z>x&&x>y)    cout<<z<<"  "<<x<<"  "<<y<<endl;}