重载运算符&生成int[][]的和

#include <iostream>
#include <vector>

class Matrix {
private:
    std::vector<std::vector<int>> data;

public:
    Matrix(std::vector<std::vector<int>> input) : data(input) {}

    Matrix operator&(const Matrix& other) const {
        std::vector<std::vector<int>> result;
        if (data.size() != other.data.size() || data[0].size() != other.data[0].size()) {
            std::cout << "Error: Matrices must have the same dimensions." << std::endl;
            return Matrix(result);
        }

        for (int i = 0; i < data.size(); i++) {
            std::vector<int> row;
            for (int j = 0; j < data[0].size(); j++) {
                row.push_back(data[i][j] + other.data[i][j]);
            }
            result.push_back(row);
        }

        return Matrix(result);
    }

    void print() const {
        for (const auto& row : data) {
            for (const auto& element : row) {
                std::cout << element << " ";
            }
            std::cout << std::endl;
        }
    }
};

int main() {
    std::vector<std::vector<int>> matrix1 = {{1, 2}, {3, 4}};
    std::vector<std::vector<int>> matrix2 = {{5, 6}, {7, 8}};

    Matrix m1(matrix1);
    Matrix m2(matrix2);

    Matrix sum = m1 & m2;
    sum.print();

    return 0;
}