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Can one pointer subtracted from another pointer?
yes
What is generic pointer in C?
When a variable is declared as being a pointer to type void it is known as a generic pointer. Since you cannot have a variable of type void, the pointer will not point to any data and therefore cannot be dereferenced. It is still a pointer though, to use it you just have to cast it to another kind of pointer first. Hence the term Generic pointer.
How many type of pointer in c?
A pointer is a pointer to something else. One way to look at it is that there is only one pointer type - an address to something else. Another way to look at it is to see how many different types there are, such as int, char, float, struct, double, etc. and to realize that you can build a pointer to any of them, as well as a pointer to a pointer to any of them, etc., etc., etc. Bottom line, is there are an unlimited number of types of pointers.
What is triple pointer?
Example: int x; -- integer int *px= &x; -- pointer to integer int **ppx= &px; -- pointer to pointer to integer int ***pppx= &ppx; -- pointer to pointer to pointer to integer
What is thread pointer?
It is a pointer.You can pass a smart pointer from one thread to another, and the two threads are free to use their smart pointers just as they were native pointers. They can copy them, assign them, and do whatever they want with them, and the smart pointer will not get you into trouble.
If you were standing on the north pole how many circumpolar stars would you see?
All stars are circumpolar
Where would you see the least number of circumpolar stars?
At the equator, you will see no circumpolar stars.
What is special about circumpolar stars?
A circumpolar star never sets below your horizon.
What is circumpolar motion?
Circumpolar motion refers to the motion of the stars relative to the viewer in a particular spot. Stars that are said to be circumpolar never cross the horizon as they cross the sky for the viewer.
How many circumpolar stars would you see if standing on the equator?
If you were standing on the equator, how many circumpolar stars would you see?
How is a circumpolar stars different from other stars?
They are always visible in the sky. (Unless it's cloudy). They don't "rise" and "set" at the latitudes where they are circumpolar.
Can circumpolar stars be included in the zodiac?
No. The Zodiac are 12 constellations that lie in the plane of the ecliptic; circumpolar ("moving around the pole") stars are well above or below the ecliptic.
Do circumpolar stars rise in the east?
No they do not. By definition circumpolar stars do not "rise". They are above the observer's horizon at all times.
What did ancient egyptians believe about astronomy?
They believed that when Paraohs died they would become one of the circumpolar stars
From the northern hemisphere circumpolar stars appear to be circling what?
Polaris
What is the difference between seasonal and circumpolar constellations?
Circumpolar stars/constellations always stay above our horizon, if they go below our horizon than they are no longer circumpolar.
What is a pointer star?
Its basically the stars that are at one of the earths axes or stars that point to the main stars at the 2 axes.
