如何返回二维char数组c ++？

#include<iostream>

char** get2DCharArray() {
    static char array[3][4] = {
        {'a', 'b', 'c', '\0'},
        {'d', 'e', 'f', '\0'},
        {'g', 'h', 'i', '\0'}
    };

    static char* ptr[3];
    for (int i = 0; i < 3; ++i) {
        ptr[i] = array[i];
    }

    return ptr;
}

int main() {
    char** result = get2DCharArray();
    for (int i = 0; i < 3; ++i) {
        std::cout<< result[i]<< std::endl;
    }
    return 0;
}

#include<iostream>
#include<vector>

std::vector<std::vector<char>> get2DCharArray() {
    std::vector<std::vector<char>> array = {
        {'a', 'b', 'c'},
        {'d', 'e', 'f'},
        {'g', 'h', 'i'}
    };

    return array;
}

int main() {
    std::vector<std::vector<char>> result = get2DCharArray();
    for (const auto& row : result) {
        for (const auto& element : row) {
            std::cout<< element << " ";
        }
        std::cout<< std::endl;
    }
    return 0;
}