输人两个n行 m列的矩阵A和B，输出官们的和A+B，矩阵加法的规则是两个短入中对应位置的值进行加和，具体参照样例。用c++写

在C++中，你可以使用二维数组来表示矩阵，并通过两层循环来实现矩阵的加法操作。以下是一个简单的示例代码：

#include <iostream>
using namespace std;

// 定义矩阵类，包含数据成员和尺寸
class Matrix {
private:
    int rows;
    int cols;
    int** data; // 二维整型指针

public:
    Matrix(int r, int c) : rows(r), cols(c) {
        data = new int*[rows];
        for (int i = 0; i < rows; ++i)
            data[i] = new int[cols];
    }

    ~Matrix() { // 析构函数释放内存
        for (int i = 0; i < rows; ++i)
            delete[] data[i];
        delete[] data;
    }

    void add(Matrix& other) {
        if (rows != other.rows || cols != other.cols) {
            cout << "Error: Matrices must have the same dimensions." << endl;
            return;
        }
        
        for (int i = 0; i < rows; ++i) {
            for (int j = 0; j < cols; ++j) {
                data[i][j] += other.data[i][j]; // 对应位置相加
            }
        }
    }

    // 其他用于打印矩阵等的方法...
};

int main() {
    int n, m;
    cout << "Enter number of rows and columns: ";
    cin >> n >> m;

    Matrix A(n, m);
    Matrix B(n, m);

    // 输入矩阵A和B的元素
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            cout << "Enter element A(" << i << "," << j << "): ";
            cin >> A.data[i][j];
            cout << "Enter element B(" << i << "," << j << "): ";
            cin >> B.data[i][j];
        }
    }

    // 执行加法
    A.add(B);

    // 输出结果矩阵A+B
    cout << "Matrix A + B:" << endl;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            cout << A.data[i][j] << " ";
        }
        cout << endl;
    }

    return 0;
}