用c++编写，用函数重载，实现两个不同类型数据的相加，包括int型，float型，double型，一维和二维数组；编写主函数对重载函数进行测试

以下是用C++编写的函数重载实现不同类型数据相加的例子，包括int型，float型，double型，一维和二维数组：

#include<iostream>
using namespace std;

int add(int a, int b) {
    return a + b;
}

float add(float a, float b) {
    return a + b;
}

double add(double a, double b) {
    return a + b;
}

int* add(int a[], int b[], int n) {
    int* c = new int[n];
    for (int i = 0; i < n; i++) {
        c[i] = a[i] + b[i];
    }
    return c;
}

double** add(double a[][3], double b[][3], int m, int n) {
    double** c = new double* [m];
    for (int i = 0; i < m; i++) {
        c[i] = new double[n];
        for (int j = 0; j < n; j++) {
            c[i][j] = a[i][j] + b[i][j];
        }
    }
    return c;
}

int main() {
    int a = 1, b = 2;
    float c = 1.1, d = 2.2;
    double e = 1.111, f = 2.222;
    int arr1[] = { 1,2,3 };
    int arr2[] = { 4,5,6 };
    double arr3[][3] = { {1.1,2.2,3.3},{4.4,5.5,6.6} };
    double arr4[][3] = { {7.7,8.8,9.9},{10.1,11.11,12.12} };
    int* arr5 = add(arr1, arr2, 3);
    double** arr6 = add(arr3, arr4, 2, 3);
    cout << "int型相加结果：" << add(a, b) << endl;
    cout << "float型相加结果：" << add(c, d) << endl;
    cout << "double型相加结果：" << add(e, f) << endl;
    cout << "一维数组相加结果：";
    for (int i = 0; i < 3; i++) {
        cout << arr5[i] << " ";
    }
    cout << endl;
    cout << "二维数组相加结果：" << endl;
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < 3; j++) {
            cout << arr6[i][j] << " ";
        }
        cout << endl;
    }
    return 0;
}