关于二维数组与二维指针传递参数

问题:

对于一矩阵A(m行n列), 矩阵B(n行p列),求其乘积C(m行p列),这其中要用到二维数组名当实参进行传递,但是怎么传递呢?形参用二维指针可以直接用吗?(如:int MatrixMultiplication(int **A, int **B, int **C, int ra, int ca, int rb, int cb), 这样是不行的!)

以下是两种可行的方法:

方法一: 形参用指向一维数组的指针 如: int (*p)[4]为一个指向一维数组的指针变量

#include <iostream>
using namespace std;

#define M 3
#define N 4
#define P 5

int MatrixMultiplication(int (*A)
, int (*B)[P], int (*C)[P], int ra, int ca, int rb, int cb);

void main()
{
	int A[M]
 = {
		{1, 2, 3, 1},
		{3, 1, 5, 5},
		{8, 1, 6, 2} };

	int B
[P] = {
		{1, 2, 3, 1, 0},
		{3, 1, 5, 2, 5},
		{0, 1, 6, 3, 1},
		{1, 0, 5, 2, 2} };

	int C[M][P];

	if (MatrixMultiplication(A, B, C, M, N, N, P) == 1)
	{
		for (int i = 0; i < M; i++)
		{
			for (int j = 0; j < P; j++)
			{
				cout << C[i][j] << " ";
			}
			cout << endl;
		}
	}
	else
	{
		cout << "ERROR!" << endl;
	}
}

int MatrixMultiplication(int (*A)
, int (*B)[P], int (*C)[P], int ra, int ca, int rb, int cb)
{
	if (ca != rb)
		return 0;

	for (int i = 0; i < ra; i++)
	{
		for (int j = 0; j < cb; j++)
		{
			int sum = A[i][0] * B[0][j];
			for (int k = 1; k < ca; k++)
			{
				sum += A[i][k] * B[k][j];
			}

			C[i][j] = sum;
		}
	}

	return 1;
}

方法二: 将函数写成这种形式也可以

int MatrixMultiplication(int A[]
, int B[][P], int C[M][P], int ra, int ca, int rb, int cb);

其余部分不变