How to pass a 2D array as a parameter in C?

Using a single pointer
In this method, we must typecast the 2D array when passing to function.

reference geekforgeeks

#include <stdio.h> void print(int *arr, int m, int n) {     int i, j;     for (i = 0; i < m; i++)       for (j = 0; j < n; j++)         printf("%d ", *((arr+i*n) + j)); }   int main() {     int arr[][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};     int m = 3, n = 3;     print((int *)arr, m, n);// notice (int*) here     return 0; } in c a printer is a pointer in parameter so it doesnt matter whether its single or double