稀疏矩阵的加法，输入任意两个稀疏矩阵A和B，求出它们的和矩阵C 输入行数、列数和非零元素，创建两个稀疏矩阵。 实现加法运算 输出稀疏矩阵C++

可以使用以下代码实现稀疏矩阵的加法：

#include <iostream>
#include <vector>

using namespace std;

struct Element {
    int row;
    int col;
    int value;
};

class SparseMatrix {
public:
    SparseMatrix(int rows, int cols, int num) {
        this->rows = rows;
        this->cols = cols;
        this->num = num;
        for (int i = 0; i < num; i++) {
            Element e;
            cout << "请输入第" << i + 1 << "个非零元素的行、列和值：" << endl;
            cin >> e.row >> e.col >> e.value;
            elements.push_back(e);
        }
    }

    SparseMatrix operator+(SparseMatrix &other) {
        if (rows != other.rows || cols != other.cols) {
            throw "两个矩阵的行列数不同，无法相加！";
        }

        SparseMatrix result(rows, cols, 0);
        int i = 0, j = 0;
        while (i < num && j < other.num) {
            if (elements[i].row < other.elements[j].row ||
                (elements[i].row == other.elements[j].row && elements[i].col < other.elements[j].col)) {
                result.elements.push_back(elements[i]);
                i++;
            } else if (elements[i].row > other.elements[j].row ||
                       (elements[i].row == other.elements[j].row && elements[i].col > other.elements[j].col)) {
                result.elements.push_back(other.elements[j]);
                j++;
            } else {
                Element e;
                e.row = elements[i].row;
                e.col = elements[i].col;
                e.value = elements[i].value + other.elements[j].value;
                result.elements.push_back(e);
                i++;
                j++;
            }
        }
        while (i < num) {
            result.elements.push_back(elements[i]);
            i++;
        }
        while (j < other.num) {
            result.elements.push_back(other.elements[j]);
            j++;
        }
        result.num = result.elements.size();
        return result;
    }

    void print() {
        cout << "行数：" << rows << " 列数：" << cols << " 非零元素数：" << num << endl;
        cout << "稀疏矩阵的三元组表示：" << endl;
        for (int i = 0; i < num; i++) {
            cout << "(" << elements[i].row << "," << elements[i].col << "," << elements[i].value << ")" << endl;
        }
    }

private:
    int rows;
    int cols;
    int num;
    vector<Element> elements;
};

int main() {
    int m, n, k;
    cout << "请输入第一个矩阵的行数、列数和非零元素个数：" << endl;
    cin >> m >> n >> k;
    SparseMatrix A(m, n, k);
    cout << "请输入第二个矩阵的行数、列数和非零元素个数：" << endl;
    cin >> m >> n >> k;
    SparseMatrix B(m, n, k);
    SparseMatrix C = A + B;
    C.print();
    return 0;
}

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