Two-dimensional array and two-dimensional pointer passing Parameters

Problem:
For a matrix A (n columns in m rows) and B (p columns in N rows), the product C (P columns in m rows) is obtained ), in this case, two-dimensional array names are used to pass real parameters, but how to pass them? Can two-dimensional pointers be used directly for parameters? (For example, int matrixmultiplication (INT ** A, int ** B, int ** C, int Ra, int ca, int RB, int CB). This is not acceptable !)
There are two feasible methods:

Method 1: The form parameter uses a pointer to a one-dimensional array, for example, INT (* P) [4 ].

#include <iostream>using namespace std;#define M 3#define N 4#define P 5int MatrixMultiplication(int (*A)[N], int (*B)[P], int (*C)[P], int ra, int ca, int rb, int cb);void main(){int A[M][N] = {{1, 2, 3, 1},{3, 1, 5, 5},{8, 1, 6, 2} };int B[N][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)[N], 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;} 

Method 2: Write Functions in this form.
Int matrixmultiplication (int A [] [N], int B [] [p], int C [m] [p], int Ra, int ca, int RB, int CB );
Remaining parts remain unchanged