# What Does PTR Mean In C++?

## Does * p ++ increment p or what it points to?

Q: Does *p++ increment p, or what it points to.

A: The postfix ++ and — operators essentially have higher precedence than the prefix unary operators.

Therefore, *p++ is equivalent to *(p++); it increments p, and returns the value which p pointed to before p was incremented..

## What actually gets passed when you pass an array as an argument to a function?

1) In C, if we pass an array as an argument to a function, what actually get passed? Explanation: In C language when we pass an array as a function argument, then the Base address of the array will be passed.

## How is PTR calculated?

PCD CALCULATOR – CALCULATE PTR AND PTS (Updated 2018 Formula)GST [5% / 12% / 18%]P.T.R = (MRP – Stockist Margin) ÷ (100+GST)*100.P.T.S (If Stockist Margin is 10%) = PTR-10%

## How is MRP calculated?

Maximum Retail Price (MRP) is calculated by actual manufacturing cost , profit margin, marketing expenses, C&F margin/franchisee margin, Stockist Margin, Retailer Margin, GST etc. Actual manufacturing cost may include manufacturing cost, transportation, electricity, GST, salary, rent, office handling charges etc.

## What does PTR mean?

PTRAcronymDefinitionPTRPupil/Teacher RatioPTRPublic Test Realm (gaming, World of Warcraft)PTRProton Transfer ReactionPTRPersonal Tax Return64 more rows

## What should my PTR record be?

PTR records are used for the Reverse DNS (Domain Name System) lookup. Using the IP address you can get the associated domain/hostname. An A record should exist for every PTR record. The usage of a reverse DNS setup for a mail server is a good solution.

## What is difference between * p ++ and ++* p?

In C programming language, *p represents the value stored in a pointer. ++ is increment operator used in prefix and postfix expressions. * is dereference operator. Precedence of prefix ++ and * is same and both are right to left associative.

## What does * mean in C?

double* means a pointer to a double variable. double** means a pointer to a pointer to a double variable. In the case of the function you posted, it is used to create a sort of two-dimensional array of doubles. That is, a pointer to an array of double pointers, and each of those pointers points to an array of pointers.

## What is void pointer?

The void pointer in C is a pointer which is not associated with any data types. It points to some data location in the storage means points to the address of variables. It is also called general purpose pointer. In C, malloc() and calloc() functions return void * or generic pointers.

## Are the expression * ptr ++?

Both operators have the same precedence, and right-left associativity. This means the expression will be grouped ++(*ptr) . The ++ part will be applied to the value of the *ptr part.

## What does * ptr mean in C?

Dereferencing a pointer means getting the value that is stored in the memory location pointed by the pointer. The operator * is used to do this, and is called the dereferencing operator.

## How does a PTR record work?

A pointer (PTR) record is a type of Domain Name System (DNS) record that resolves an IP address to a domain or host name, unlike an A record which points a domain name to an IP address. PTR records are used for the reverse DNS lookup. Using the IP address, you can get the associated domain or host name.

## Where do I put PTR record?

Adding a PTR record to an IPv4 addressIn the menu bar, go to section “Dedicated & Bare Metal” and select “All servers”.The overview of Dedicated & Bare Metal servers is displayed.Click the IP address for the server hosting pack to which you want to add the PTR record.More items…

## What does * p mean in C?

pointer operationThe pointer operation ‘*’ in C programming language is called ‘value at address’ operator. *p gives the value of the variable stored at address (or location) p. Similarly, **p gives the value of the variable stored at address *p. 1.7K views.

## Why is it called Dereferencing?

The de- prefix most likely comes from the Latin preposition meaning from; I suppose you could think of dereference as meaning “to obtain the referent (or object) from the reference.” Dereferencing means taking away the reference and giving you what it was actually referring to.

## What is PTR price?

PTR (Price to Retailer) is short form of “Price to Retailer”. PTR is general term frequently used by companies to mention the price of product offered to retailer. PTR must not be confused with MRP (Maximum Retail Price).

## Why do we need a PTR record?

It tells everyone receiving email from you that you are who you claim to be. That way, email receivers know that your IP address hasn’t been taken over by spammers. You need a PTR record because many mail servers will reject email that comes from a mail server without one.

## How MRP is decided?

In order to cater to the demand by selected trade channels, they have chosen to follow this practice. In reality, no one follows MRP. In high-demand catchment areas, where price sensitivity is low, any product is sold above MRP. On the other hand, in price-sensitive areas, the same product is sold at a discount.

## What does * do in C?

* is the indirection operator in C and C++. Whenever it is used, it indicates that the variable next to it is a pointer containing the address of another variable. Indirection operator is also the “value stored at address” operator. When we write *p, it refers to the value stored at address contained in pointer p.

## Is P and and P the same?

&(*p) is a pointer that points to the same thing that p points to. It may not be the same object at p, but it has the same value as p, which may be all that counts.