题目链接http://acm.hdu.edu.cn/showproblem.php?pid=2016

AC代码
#include<iostream>
using namespace std;
int main()
{
    int n,i,t,k,c[100];
    while(cin>>n)
    {
        if(n==0)
            break;
        else
        {
            k=0;
            for(i=1; i<=n; i++)
                cin>>c[i];
            c[0]=c[1];
            for(i=2; i<=n; i++)
            {
                if(c[i]<c[0])
                {
                    c[0]=c[i];
                    t=i;
                    k=1;
                }
            }
            if(k==1)
            {
                c[t]=c[1];
                c[1]=c[0];
            }
            cout<<c[1];
            for(i=2; i<=n; i++)
                cout<<' '<<c[i];
            cout<<endl;
        }
    }
    return 0;
}