C++ 用同一个函数名对n个数据进行从小到大的排序，数据类型可以是整型、单精度、双精度型，用重载函数实现。

源程序代码：
#include 
using namespace std;
int sort(int* p, int n)
{
    for (int i = 0; i < n; i++)
    {
        for (int j = i; j < n; j++)
        {
            if (p[i] > p[j])
            {
                int x;
                x = p[j];
                p[j] = p[i];
                p[i] = x;
            }
        }
    }
    for (int k = 0; k < n; k++)
        cout << p[k] << " ";
    return 0;
}
float sort(float* p, int n)
{
    for (int i = 0; i < n; i++)
    {
        for (int j = i; j < n; j++)
        {
            if (p[i] > p[j])
            {
                float x;
                x = p[j];
                p[j] = p[i];
                p[i] = x;
            }
        }
    }
    for (int k = 0; k < n; k++)
        cout << p[k] << " ";
    return 0;
}
double sort(double* p, int n)
{
    for (int i = 0; i < n; i++)
    {
        for (int j = i; j < n; j++)
        {
            if (p[i] > p[j])
            {
                double x;
                x = p[j];
                p[j] = p[i];
                p[i] = x;
            }
        }
    }
    for (int k = 0; k < n; k++)
        cout << p[k] << " ";
    return 0;
}
int main()
{
    int a, n;
    cout << "您需要比较什么类型的数：\n1.整型\n2.单精度\n3.双精度" << endl << "输入类型前的编号：" << endl;
    cin >> a;
    cout << "请输入您需要比较数据的个数：" << endl;
    cin >> n;
    cout << "请输入" << n << "个需要比较的数\n";
    if (a == 1)
    {
        int* p = new int[n];
        for (int i = 0; i < n; i++)
            cin >> p[i];
        sort(p, n);
    }
    if (a == 2)
    {
        double* p = new double[n];
        for (int i = 0; i < n; i++)
        cin >> p[i];
        sort(p, n);
    }
    if (a == 3)
    {
        float* p = new float[n];
        for (int i = 0; i < n; i++)
        cin >> p[i];
        sort(p, n);
    }
    return 0;
}

运行结果截图：