int matrix with pointers in C - memory allocation confusion

Question

I\'m having some issues with producing an int matrix without creating memory leaks. I want to be able to make a given (global) matrix into any size dynamically via read_matr

Answer 1

You need to free each row individually:

void free_matrix(int **matrix, int size_x)
{
    for(int i = 0; i < size_x; i++)
        free(matrix[i]);
    free(matrix);
}