#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<conio.h>
#include<math.h>

#define TRUE 1
#define FALSE 0

//functions declaration
int init_matrix(int size);


int main()
{
	char **mat;
	int size, i,j;
	printf("please enter required size: ");
	scanf("%d", &size);
	init_matrix(size);

	// i want to check if the memory allocated by printing the mat.
	for (i = 0; i < size; i++)
	{
		for (j = 0; j < size; j++)
		{
			printf("%c", mat[i][j]);
		}
		printf("\n");
	}

	getch();
	return 0;
}

//gets a number from the user and allocates memory for the matrix.
int init_matrix(int size)
{

	int i,rows = size, cols = size, j;
	char **mat;
	mat = (char**)malloc(rows*sizeof(char));
	for (i = 0; i < rows; i++)
	{
		mat[i] = (char*)malloc(cols*sizeof(char));
	}
	if (mat == NULL)
	{
		printf("not enough memory");
		return FALSE;
	}
	for ( i = 0; i < rows; i++)
	{
		for ( j = 0; j < cols; j++)
		{
			mat[i][j] = 'o';
		}
	}
	return **mat;


}