第9题

#include <iostream>using namespace std;int main(){void sort(int &,int &,int &); int a,b,c,a1,b1,c1; cout<<"请输入三个数:"; cin>>a>>b>>c; a1=a;b1=b;c1=c; sort(a1,b1,c1); cout<<a<<" "<<b<<" "<<c<<" 从小到大的顺序为 "; cout<<a1<<" "<<b1<<" "<<c1<<endl; return 0;}void sort(int &i,int &j,int &k){ void change(int &,int &);if (i>j) change(i,j);  if (i>k) change(i,k);  if (j>k) change(j,k);}void change(int &x,int &y){ int temp;  temp=x;  x=y;  y=temp;}