dynamic.c

#include <stdio.h>
#include <stdlib.h>

typedef struct{
  //doesn't compile without parens
	unsigned char (*c)[3];
}a_t;

int main(){
	
	a_t a;
  //single dimensional malloc since i always know the length of a.c
	a.c = malloc(sizeof(char[3]) * 10);
	
	a.c[0][0] = 23;
	a.c[5][2] = 11;
	
	printf("a.c[0][0] = %d\na.c[5][2] = %d\n", a.c[0][0], a.c[5][2]);
	
	free(a.c);
	
	return 0;
}