Menu
I've recently decided that I just have to finally learn C/C++, and there is one thing I do not really understand about pointers or more precisely, their definition.
How about these examples:
int* test;int *test;int * test;int* test,test2;int *test,test2;int * test,test2;Now, to my understanding, the first three cases are all doing the same: Test is not an int, but a pointer to one.
The second set of examples is a bit more tricky. In case 4, both test and test2 will be pointers to an int, whereas in case 5, only test is a pointer, whereas test2 is a "real" int. What about case 6? Same as case 5?
964
When declaring a pointer type, place the asterisk next to the type name. Although you generally should not declare multiple variables on a single line, if you do, the asterisk has to be included with each variable.
The syntax of declaring a pointer is to place a * in front of the name. A pointer is associated with a type (such as int and double) too. Naming Convention of Pointers: Include a "p" or "ptr" as prefix or suffix, e.g., iPtr, numberPtr, pNumber, pStudent.
In an expression, *pointer refers to some object using its memory address. A declaration such as int *pointer means that *pointer will refer to an int . Since *pointer refers to an int , this means that pointer is a pointer to an int .
A pointer is a variable that stores the memory address of another variable as its value. A pointer variable points to a data type (like int ) of the same type, and is created with the * operator.
4, 5, and 6 are the same thing, only test is a pointer. If you want two pointers, you should use:
int *test, *test2; Or, even better (to make everything clear):
int* test; int* test2; If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
