Assign pointer to array-CodePudding

Is possible to assign pointer to array or array to array?

int arr[3] {1,2,3};
int pnt[3];
pnt = arr;
//or
pnt = &arr[0];

compiler don't want accept this....

CodePudding user response：

Is possible to assign pointer to array

Yes.

or array to array?

No. Arrays are not assignable.

compiler don't want accept this....

That's because pnt is not a pointer. You can create a pointer to the first element of the array like this:

int* pnt = arr;

CodePudding user response：

assign pointer to array

You can assign array to a pointer. E.g.:

int b[2] = {3,4};
int *p;
p=b;

Note, that in your case, you've tried to assign an array to another array, not a pointer. The variable p is still a pointer, but now happens to point to the place in memory, where the array b sits.

or array to array

No, you can't do this. You could use std::array if you want this kind of syntax. In case of the raw array, like in the example, you'd have to copy the data from one array to another.