#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
#define A 10
struct aa {
	int a;
	int b;
};
int main()
{
	char * ptr;
	int aa[2][] = {2,3,4,4};
	double a = 5;
	float b;
	b = a;	
	//printf("%d", sizeof(struct aa));
	printf("%f", b);
	ptr = malloc (sizeof(0));
	strcpy(ptr,"hello");
	printf("%p", ptr);
	printf("%s", *ptr);
	//while(0) {
	//	ptr = (int *) malloc (sizeof(int*));
//	}
	return 0;
}