What are pointers in C++, and how do they differ from references?
What are pointers in C++, and how do they differ from references?
10104-Aug-2023
Updated on 06-Aug-2023
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What are pointers in C++, and how do they differ from references?
Aryan Kumar
06-Aug-2023Pointers and references are both variables that can store the address of another variable. However, they differ in how they are used and what they can do.
Here is an example of how pointers and references can be used:
C++
In this example,
p
is a pointer to the variablex
.r
is a reference to the variablex
. The value ofx
is printed twice, once using*p
and once usingr
. The value ofx
is then changed to 20 using*p
. However, an error is thrown whenr
is used to try to change the value ofx
.Pointers are more flexible than references, but they are also more dangerous. It is important to be careful when using pointers, as it is easy to make mistakes that can lead to memory leaks or other problems.
Here are some additional points about pointers and references in C++:
Overall, pointers are a powerful tool that can be used to access and manipulate data in C++. However, they are also dangerous and should be used with care.