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Questions - pointers

Confused with references on pointers in C++

The task is to calculate the output of the following source code without a computer, which I would say is "123 234 678 678" because ref1 is a reference on the value of ptr and in the moment ...
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Elliot

c++

pointers

reference

variable-assignment

memory-address

Votes: 0

Answers: 1

Latest Answer

After this declarations int& ref1 = *ptr; int& ref2 = val2; ref1 refers to val1 and ref2 refers to val2. After the declarations the references can not be changed to refer to other variables. ...
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Vlad from Moscow

How to initialise struct with constant members with certain address?

I am trying to initialise class object (which has constant members) with certain values and certain address. I understand that this is because members are constant but I need them to be constant. I tr...
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bugrishka

c++

class

pointers

constants

Votes: 0

Answers: 1

Latest Answer

You can create an object at a specific address using placement-new: extern void* some_address; int main() { ints* ptr = new(some_address) ints{1, 2}; std::cout << ptr->a; }
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eerorika

Error: invalid operands of types className&lt;int&gt;* and className&lt;int&gt;* to binary &#39;operator+&#39;

I'm trying to make a class where I create a number based off of nodes linking to each other, allowing for larger integers. I overloaded the operator to allow individual nodes to add to each other as s...
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Sean Zlatev

c++

pointers

operator-overloading

Votes: 0

Answers: 0

Go function to return pointer of any type?

Using Go 1.16 Currently no plan to use Go 1.18 We have a scenario of using below struct: type X struct { M1 *int64 M2 *string M3 *[]string } For below code: package main import ( &...
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overexchange

go

pointers

Votes: 0

Answers: 1

Latest Answer

Type of the M1, M2 and M3 fields are different, so without generics (Go 1.18) you can't have a function that have multiple return types, assignable to these different fields. Before showing what's pos...
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icza

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