Question about a 32 bit pointer in embedded C

[123music]

I have a long *temp and int *temp1(assuming long is 4 bytes and int is 2 bytes and initialized with some memory address)

if i want to write 2 bytes into temp1 from temp, i will write as
*temp1 = *(int*)temp;

what if i want to write 2 bytes into temp from temp1??can i write as
*(int*)temp = temp1??

Is it allowed in embedded C?

But i think the second case we cannot call it as type casting..What do we call it then?

 

[millwood]

32 bit pointer

whether someone is a 32-bit pointer has nothing to do with if the object it points to is a 32-bit type or not.

"*temp1 = *temp;" takes the value temp points to (a 4-byte type) and gives it to the object temp1 points to (a 2-byte type).

"*temp=*temp1;" does the opposite.

"*temp=temp1;" takes the value of temp1 (a pointer) and gives it to the object temp points to). This operation is almost meaningless.