Unable to pass 2D character array to function(C++) - c++

Question

I am trying to pass a 2-D character array to a function however vs code gives me the following error message:
cannot convert 'char ()[3]' to 'char ()[10]'gcc
Here is the code:
#include<string>
using namespace std;
void NodeDetect(char grid[][3], int height, int width)
{
cout << "\nThe grid output:\n";
for(int i = 0; i < height; ++i)
{
for(int j = 0; j < width; ++j)
if(grid[i][j] == '0')
{
cout << '\n' << i << '\t' << j << ", ";
if(grid[i][j + 1] == '0' && (j + 1) < width)//right neighbour
cout << i << '\t' << (j + 1) << ", ";
else if(grid[i][j + 1] == '.' || (j + 1) == width)
cout << "-1 -1, ";
if(grid[i + 1][j] == '0' && (i + 1) < height)//bottom neighbour
cout << (i + 1) << '\t' << j << ", ";
else if(grid[i + 1][j] == '.' || (i + 1) == height)
cout << "-1 -1";
}
cout << '\n';
}
}
int main()
{
string line;
char grid[3][3];
int height, width; //height = rows
cout << "Enter the height and the width:\t";//width = columns
cin >> height >> width;
cout << "\nEnter the strings:\n";
for(int i = 0; i < height; ++i)//initializing the grid
cin >> grid[i];
/*
cout << "\nThe grid:\n";
for(int i = 0; i < height; ++i) //displaying the grid
{
for(int j = 0; j < width; ++j)
cout << grid[i][j] << '\t';
cout << '\n';
}
*/
NodeDetect(grid, height, width);
return 0;
}
I am trying to pass the 2D array grid to the function NodeDetect

Answer 1

If you want to pass a plain old C-array to a function in C++, you have 2 possibilities.
Pass by reference
Pass by pointer
It seems that you want to pass by reference. But you are using the wrong syntax.
Please see:
void function1(int(&m)[3][4]) // For passing array by reference
{}
void function2(int(*m)[3][4]) // For passing array by pointer
{}
int main()
{
int matrix[3][4]; // Define 2 dimensional array
function1(matrix); // Call by reference
function2(&matrix); // Call via pointer
return 0;
}
What you pass to the function is a decayed pointer to array of char.
Simply correct the syntax and it will work.
Additional hint:
Do not use plain C-style arrays in C++. Never. Please use STL containers.