使用C++编程：键盘输入10个数（可能为整形、浮点型、双精度型及其字符类型），分别利用函数重载和函数模板，求出其中的最大值和最小值。

函数重载实现：

#include <iostream>
using namespace std;

int max(int a, int b) {
    return a > b ? a : b;
}

float max(float a, float b) {
    return a > b ? a : b;
}

double max(double a, double b) {
    return a > b ? a : b;
}

char max(char a, char b) {
    return a > b ? a : b;
}

int min(int a, int b) {
    return a < b ? a : b;
}

float min(float a, float b) {
    return a < b ? a : b;
}

double min(double a, double b) {
    return a < b ? a : b;
}

char min(char a, char b) {
    return a < b ? a : b;
}

int main() {
    int intArr[10];
    float floatArr[10];
    double doubleArr[10];
    char charArr[10];

    cout << "请输入10个整数：" << endl;
    for (int i = 0; i < 10; i++) {
        cin >> intArr[i];
    }

    cout << "请输入10个浮点数：" << endl;
    for (int i = 0; i < 10; i++) {
        cin >> floatArr[i];
    }

    cout << "请输入10个双精度数：" << endl;
    for (int i = 0; i < 10; i++) {
        cin >> doubleArr[i];
    }

    cout << "请输入10个字符：" << endl;
    for (int i = 0; i < 10; i++) {
        cin >> charArr[i];
    }

    int maxInt = intArr[0], minInt = intArr[0];
    float maxFloat = floatArr[0], minFloat = floatArr[0];
    double maxDouble = doubleArr[0], minDouble = doubleArr[0];
    char maxChar = charArr[0], minChar = charArr[0];

    //求最大值和最小值
    for (int i = 1; i < 10; i++) {
        maxInt = max(intArr[i], maxInt);
        minInt = min(intArr[i], minInt);

        maxFloat = max(floatArr[i], maxFloat);
        minFloat = min(floatArr[i], minFloat);

        maxDouble = max(doubleArr[i], maxDouble);
        minDouble = min(doubleArr[i], minDouble);

        maxChar = max(charArr[i], maxChar);
        minChar = min(charArr[i], minChar);
    }

    cout << "整数的最大值为：" << maxInt << endl;
    cout << "整数的最小值为：" << minInt << endl;

    cout << "浮点数的最大值为：" << maxFloat << endl;
    cout << "浮点数的最小值为：" << minFloat << endl;

    cout << "双精度数的最大值为：" << maxDouble << endl;
    cout << "双精度数的最小值为：" << minDouble << endl;

    cout << "字符的最大值为：" << maxChar << endl;
    cout << "字符的最小值为：" << minChar << endl;

    return 0;
}

函数模板实现：

#include <iostream>
using namespace std;

template <typename T>
T max(T a, T b) {
    return a > b ? a : b;
}

template <typename T>
T min(T a, T b) {
    return a < b ? a : b;
}

int main() {
    int intArr[10];
    float floatArr[10];
    double doubleArr[10];
    char charArr[10];

    cout << "请输入10个整数：" << endl;
    for (int i = 0; i < 10; i++) {
        cin >> intArr[i];
    }

    cout << "请输入10个浮点数：" << endl;
    for (int i = 0; i < 10; i++) {
        cin >> floatArr[i];
    }

    cout << "请输入10个双精度数：" << endl;
    for (int i = 0; i < 10; i++) {
        cin >> doubleArr[i];
    }

    cout << "请输入10个字符：" << endl;
    for (int i = 0; i < 10; i++) {
        cin >> charArr[i];
    }

    int maxInt = intArr[0], minInt = intArr[0];
    float maxFloat = floatArr[0], minFloat = floatArr[0];
    double maxDouble = doubleArr[0], minDouble = doubleArr[0];
    char maxChar = charArr[0], minChar = charArr[0];

    //求最大值和最小值
    for (int i = 1; i < 10; i++) {
        maxInt = max(intArr[i], maxInt);
        minInt = min(intArr[i], minInt);

        maxFloat = max(floatArr[i], maxFloat);
        minFloat = min(floatArr[i], minFloat);

        maxDouble = max(doubleArr[i], maxDouble);
        minDouble = min(doubleArr[i], minDouble);

        maxChar = max(charArr[i], maxChar);
        minChar = min(charArr[i], minChar);
    }

    cout << "整数的最大值为：" << maxInt << endl;
    cout << "整数的最小值为：" << minInt << endl;

    cout << "浮点数的最大值为：" << maxFloat << endl;
    cout << "浮点数的最小值为：" << minFloat << endl;

    cout << "双精度数的最大值为：" << maxDouble << endl;
    cout << "双精度数的最小值为：" << minDouble << endl;

    cout << "字符的最大值为：" << maxChar << endl;
    cout << "字符的最小值为：" << minChar << endl;

    return 0;
}