Software Architect Questions

The mail() function allows you to send emails directly from a script.

A variable provides us with named storage that our programs can manipulate. Each variable in C++ has a specific type, which determines the size and layout of the variable's memory the range of values that can be stored within that memory and the set of operations that can be applied to the variable.

The name of a variable can be composed of letters, digits, and the underscore character. It must begin with either a letter or an underscore. Upper and lowercase letters are distinct because C++ is case-sensitive −

Basic types of variables:

1. bool

Stores either value true or false.

2. char

Typically a single octet (one byte). This is an integer type.

3. int

The most natural size of an integer for the machine.

4. float

A single-precision floating point value.

5. double

A double-precision floating point value.

6. void

Represents the absence of type.

7. wchar_t

A wide character type.

Dynamic Search Ads are the simplest way to find the customers searching on Google for indubitably what you offer. This is an ideal way for with a well-developed website or with a large inventory. Businesses with websites that contain a lot of content or well-structured URLs will see the best results from using Dynamic Search Ads. 

Even well managed Adwords account with many keywords can miss relevant searches, experiance delays in getting ads added for new products or it may be out of Sync with what the website originally have.

How to Target : 

You can target 

• All the web pages  (or)

• Specific webpages containing certain keywords.

Benefits of Dynamic Search Ads :

• Save time. No more mapping keywords, bids, and ad text to each product on your website. Plus, Dynamic Search Ads may help you advertise to new markets faster than other alternatives.

• Frequent, automatic updates to your ads. When you make changes to pages in our index, we'll crawl your website again to help ensure that your ads are as up to date as possible.

• Show relevant, dynamically generated headlines with your ads. When a customer's search is relevant to your product or service, AdWords will dynamically generate an ad with a clear headline for the most relevant page on your site.

Most of the times compilers will do optimization to the code to speed up the program. For example in the below code,

int k = 15;
while( k == 15)

{
// Do something
}

compiler may think that value of 'k' is not getting changed in the program and replace it with 'while(true)', which will result in an infinite loop. In actual scenario, the value of 'k' may be getting updated from outside of the program.

Volatile keyword is used to tell compiler that the variable declared using 'volatile' may be used from outside the current scope, so that compiler won't apply any optimization. This matters only in case of multi-threaded applications.

In the above example if variable 'k' was declared using volatile, compiler will not optimize it. In shot, value of the volatile variables will be read from the memory location directly.

:: is the scope resolution operator

An inline function is a function that is expanded inline when invoked.ie. the compiler replaces the function call with the corresponding function code. An inline function is a function that is expanded in line when it is invoked. That is the compiler replaces the function call with the corresponding function code (similar to macro)

A reference variable provides an alias to a previously defined variable.

Data type & reference-name = variable name

Destructor is a special member function of a class, which is invoked automatically whenever an object goes out of the scope. It has the same name as its class with a tilde character prefixed.