C语言二维数组的传递几种方法

#include <iostream>
#include <string>

using namespace std;

// 方法1：传递了二维数组的首地址，和二维数组的行数
void print1_Array2D(int (*ptr)[4], int cnt)
{
    for (int i = 0; i < cnt; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            cout << ptr[i][j] << " ";
        }
        cout << endl;
    }
}

// 方法2：传递了二维数组的首地址，和二维数组的行数
void print2_Array2D(int ptr[][4], int cnt)
{
    for (int i = 0; i < cnt; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            cout << ptr[i][j] << " ";
        }
        cout << endl;
    }
}

// 方法3：传递了二维数组第一个元素的地址，和而为数组的行数和列数
void print3_Array2D(int *ptr, int row, int col)
{
    for (int i = 0; i < row; i++)
    {
        for (int j = 0; j < col; j++)
        {
            cout << *(ptr + i * col + j) << " ";
        }
        cout << endl;
    }
}

int main(int argc, char *argv[])
{
    int iArray2D[3][4] = 
    {
        {12, 3, 5 ,12}, 
        {23, 4, 8 ,10},
        {10, 7, 3 ,18}
    };
    print1_Array2D(iArray2D, 3);
    cout << endl;
    print2_Array2D(iArray2D, 3);
    cout << endl;
    print3_Array2D(&iArray2D[0][0], 3, 4);

    return 0;
}

#include <iostream>
#include <string>

using namespace std;

// 方法4：将二维数组的每行地址传递给指针数组，及二维数组的行数和列数
void print4_Array2D(int* ptr[], int row, int col)
{
    for (int i = 0; i < row; i++)
    {
        for (int j = 0; j < col; j++)
        {
            cout << *(ptr[i] + j) << " ";
        }
        cout << endl;
    }
}

// 方法5：与方法4本质相同

void print5_Array2D(int** ptr, int row, int col)
{
    for (int i = 0; i < row; i++)
    {
        for (int j = 0; j < col; j++)
        {
            cout << *(ptr[i] + j) << " ";
        }
        cout << endl;
    }
}

int main(int argc, char *argv[])
{
    int iArray2D[3][4] = 
    {
        {12, 3, 5 ,12}, 
        {23, 4, 8 ,10},
        {10, 7, 3 ,18}
    };

    int* ptr[3] = {iArray2D[0], iArray2D[1], iArray2D[2]};
    for (int i = 0; i < 3; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            cout << *(ptr[i] + j) << " ";
        }
        cout << endl;
    }
    cout << endl;

    print4_Array2D(ptr, 3, 4);
    cout << endl;
    print5_Array2D(ptr, 3, 4);

    return 0;
}