C/code/矩阵类(运算符+-及输入输出重载).cpp

#include <iostream>
#include <iomanip>

class Matrix {
private:
    int data[2][3];

public:
    // 默认构造函数，初始化矩阵为0
    Matrix() {
        for (int i = 0; i < 2; ++i)
            for (int j = 0; j < 3; ++j)
                data[i][j] = 0;
    }

    // 重载输入运算符
    friend std::istream& operator>>(std::istream& in, Matrix& matrix) {
        for (int i = 0; i < 2; ++i) {
            for (int j = 0; j < 3; ++j) {
                in >> matrix.data[i][j];
            }
        }
        return in;
    }

    // 重载输出运算符
    friend std::ostream& operator<<(std::ostream& out, const Matrix& matrix) {
        for (int i = 0; i < 2; ++i) {
            for (int j = 0; j < 3; ++j) {
                out << std::setw(7) << matrix.data[i][j]; // 用这个什么setw设置宽度
            }
            out << std::endl;
        }
        return out;
    }

    // 重载加法运算符
    Matrix operator+(const Matrix& other) const {
        Matrix result;
        for (int i = 0; i < 2; ++i) {
            for (int j = 0; j < 3; ++j) {
                result.data[i][j] = this->data[i][j] + other.data[i][j];
            }
        }
        return result;
    }

    // 重载减法运算符
    Matrix operator-(const Matrix& other) const {
        Matrix result;
        for (int i = 0; i < 2; ++i) {
            for (int j = 0; j < 3; ++j) {
                result.data[i][j] = this->data[i][j] - other.data[i][j];
            }
        }
        return result;
    }
};

int main() {
    Matrix m1, m2;

    std::cout << "请输入2行3列矩阵内容:" << std::endl;
    std::cin >> m1;

    std::cout << "请输入2行3列矩阵内容:" << std::endl;
    std::cin >> m2;

    Matrix sum = m1 + m2;
    Matrix diff = m1 - m2;

    std::cout << "m1+m2=" << std::endl;
    std::cout << sum;

    std::cout << "m1-m2=" << std::endl;
    std::cout << diff;

    return 0;
}