dynamic memory for 2D char array

Question

I have declared an array char **arr; How to initialize the memory for the 2D char array.

Answer 1

Use the following trick:

typedef char char2D[1][1];

char2D  *ptr;

ptr = malloc(rows * columns, sizeof(char));

for(i = 0; i < rows; i++)
    for(j = 0; j < columns; j++)
        (*ptr)[i][j] = char_value;