how to put the array of pointers into a vector

Asked Feb 16 '16 at 11:01

Active Feb 16 '16 at 12:15

Viewed 60 times

Edit: I do not want to only copy the data of Array into a vector. Actually i need the vector to store the total Array as the element. The Problem is that when i put the name of array in the vector, it was wrong. My question is different with the How do you copy the contents of an array to a std::vector in C++ without looping?

struct SPoint
{
  float32_t    ftX;
  float32_t    ftY;
};
std::vector<SPoint*> vecSPoint;
SPoint* pointArray[3]; // assume that there are already three pointers in this Array

I want to put this Array in the vector. But it does not work:

vecSPoint.pushback(pointArray);

What is the Problem and how can I solve it?

edited May 23 '17 at 12:31

Community

asked Feb 16 '16 at 11:01

rayallen

You are trying to push an array of `SPoint*` as an element of a vector of `SPoint*` - that's like trying to put a cargo ship full of cars in a parking lot. – Matteo Italia Feb 16 '16 at 11:04
Do you want to push the C-style array into the vector? – Bathsheba Feb 16 '16 at 11:05
@Bathsheba yes. Do you know how to make it. – rayallen Feb 16 '16 at 11:08
See the accepted answer on the duplicate. – Bathsheba Feb 16 '16 at 11:08
@MatteoItalia But I want to put Array into vector – rayallen Feb 16 '16 at 11:08
`vecSPoint.push_back(*pointArray);` – Alexey Andronov Feb 16 '16 at 11:11
@rayallen: you cannot put an array of something into a vector of something, what you *can* do is to put *the array's elements* into the vector. – Matteo Italia Feb 16 '16 at 11:11
1

@AlexeyAndronov: nope, that pushes just the first element. – Matteo Italia Feb 16 '16 at 11:11
@AlexeyAndronov this way seems to be wrong – rayallen Feb 16 '16 at 11:13
@MatteoItalia you mean that the vector can not store the element as Array? – rayallen Feb 16 '16 at 11:14
@rayallen: exactly; an `std::vector` can only store elements of type `SPoint *`, not *arrays* of them. What exactly are you trying to achieve? – Matteo Italia Feb 16 '16 at 11:17
@MatteoItalia, yep, you're right, my bad = \ – Alexey Andronov Feb 16 '16 at 11:58
@MatteoItalia I want to put the Array into the vector. How can I change the vector `std::vector` to make the storing possible? – rayallen Feb 16 '16 at 12:08
@juanchopanza I saw the quesition that might be similar with mine. But i think mine is different. I have edited it to make it clear. – rayallen Feb 16 '16 at 12:26
OK. Arrays cannot be stored in vectors. [There are other duplicates for that](http://stackoverflow.com/questions/11044304/can-i-push-an-array-of-int-to-a-c-vector). – juanchopanza Feb 16 '16 at 12:27

how to put the array of pointers into a vector

0 Answers0