书中给出的答案：
#include <iostream>
using namespace std;
int main()
{
    void select_sort(int array[], int n);
    int a[10], i;
    cout << "enter the originl arry:" << endl;
    for (i = 0; i < 10; i++)
        cin >> a[i];
    cout << endl;
    select_sort(a,10);
    cout << "the ssorted array:" << endl;
    for (i = 0; i < 10; i++)
        cout << a[i] << " ";
    cout << endl;
    system("pause");
}
void select_sort(int array[], int n)
{
    int i, j, k, t;

    for (i = 0; i < n - 1; i++)
    {
        k = i;
        for (j = i + 1; j < n; j++)
            if (array[j] < array[k])        
                k = j;
        t = array[k]; array[k] = array[i]; array[i] = t;
    }
}

我自己写的：

#include <iostream>
using namespace std;
void select_sort(int array[], int n);
int main()
{
    void select_sort(int array[], int n);
    int a[10], i;
    cout << "enter the originl arry:" << endl;
    for (i = 0; i < 10; i++)
        cin >> a[i];
    cout << endl;
    select_sort(a, 10);
    cout << "the ssorted array:" << endl;
    for (i = 0; i < 10; i++)
        cout << a[i] << " ";
    cout << endl;
    system("pause");
}
void select_sort(int array[], int n)
{
    int i, j, t;
    for (i = 0; i < n - 1; i++)
    {
        for (j = i + 1; j < n; j++)
            if (array[j] < array[i])
            {
                t = array[j]; array[j] = array[i]; array[i] = t;
                cout << array[i] << " " << array[j] << endl;
            }
    }
}
主要是我的select_sort函数中省去了“k”变量，将这个函数改了一下，这样做有没有问题？

哦，原来如此，谢了。