Is this any help?
#include <stdio.h>
#define MAX 10
int main()
{
char grid[MAX][MAX];
int i,j,row,col;
printf("Please enter your grid size: ");
scanf("%d %d", &row, &col);
for (i = 0; i < row; i++) {
for (j = 0; j < col; j++) {
grid[i][j] = '.';
printf("%c ", grid[i][j]);
}
printf("\n");
}
return 0;
}