Passing a pointer and passing an adress, I am really confused...
Ok... I know this is simple, but It bothers me, always has...
if I were to have a function which passed:
test(int & one);
and another which passed
test2(int * two);
what does it mean exactly, how would I use the data being passed in? what would the data be representing?
I know this is simple... I just have issues with pointers.
I suggest you first read the tutorial on pointers we have here on this site.
Cprogramming.com Tutorial: Pointers
1. Get rid of gets(). Never ever ever use it again. Replace it with fgets() and use that instead.
2. Get rid of void main and replace it with int main(void) and return 0 at the end of the function.
3. Get rid of conio.h and other antiquated DOS crap headers.
4. Don't cast the return value of malloc, even if you always always always make sure that stdlib.h is included.
It should be noted that unless you've been reading C++, the biggest difference between the two is that the second one is possible and the first one isn't (assuming these are function prototypes).
In C++ (not C), this is a reference variable. It functions similarly to a pointer except they do not need to be explicitely dereferenced. Take this pointer operation for example.Code:test(int & one);
Using a reference, this could be done more simply, e.g.Code:int some_variable; int *ptr = &some_variable; *ptr = 10;
Code:int some_variable; int &ref = some_variable; ref = 10;
