#include <stdio.h>
int main(){
	int* pointerToInt=NULL; //This DECLARES a pointer to an int and assigns the address stored in the poitner as NULL (0) 
	int a=40; //This is just an int with value 40, not a pointer
	int b=0;  //just another int with value 0, not a pointer
	float myFloat=1.0f; //just a float, not a pointer
	printf("We're on line#%d and a is:%d\tb is:%d \n",__LINE__, a, b);
	//a=*pointerToInt; //this would dereference (take the value that pointerToInt points to) 
						   //and assign it to a, but I've commented it out because i'd be dereferencing null, which isn't allowed (on normal platforms)
	pointerToInt=&a; //This takes the ADDRESS to a, you can now say that "pointerToInt points to a" meaning that:
	b=*pointerToInt; //If we dereference it we will get the value that is contained in a
	printf("We're on line#%d and a is:%d\tb is:%d \n",__LINE__, a, b);
	void* pointerToVoid=NULL; //This is a pointer to void type. A void type doesn't have a size, so it's just an address
	pointerToVoid=&a; //we can store any address in a void pointer but:
	//b=*pointerToVoid; //This doesn't workbecause the pointer isn't specified to point to a complete object type (a struct, a primitive like float, int whatever)
	a=5; //Just to make some change
	printf("We're on line#%d and a is:%d\tb is:%d \n",__LINE__, a, b);
	b=*((int*)pointerToVoid); //We can do this to make this work. We coerce/cast the void* to be an int*. It now makes sense to dereference it.
	//(The outermost parenthesis here is uneccesary but I added it for some clarity)
	printf("We're on line#%d and a is:%d\tb is:%d \n",__LINE__, a, b);
	pointerToVoid=&myFloat; //since this is a void pointer we can take the address of a float and store it in a void pointer without the compiler complaining
	b=*((int*)pointerToVoid); //we can then dereference it as an int, which doesn't make much sense at all
	printf("We're on line#%d and a is:%d\tb is:%d \n",__LINE__, a, b); //This happens. Be careful using void pointers.
	return 0;
}

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