No, it is not necessary that variables that contain numbers should always be declared as integer or floating-point data types.
It is not necessary that variables that contain numbers should be declared as integer and floating point data types. Because number can be declared with different data types. As we know that data type is a vital aspect in programming. It describes the type of a value that is contained in a variable. It is the data type based on which memory is allocated to a number or any type of variables.
Numbers can be whole decimal/fractional, signed, unsigned, small, and long. Simply, they exist in a variety of values. According to their values range, the amount of memory is reserved.
Different programming languages offer different data types to store numbers, depending on their types and size. Let’s consider some examples of data types used in programming languages in order to declare variables holding numbers.
- In Python int, float, and complex are the data types used to declare number type variables.
- SQL uses INTEGER, SMALLINT , BIGINT , NUMERIC() , and DECIMAL() data types for numbers.
- To deal with number type variables, Java has six predefined data types, such as int, long, short, byte, float, and double.
- JavaScript uses a single data type called 'number' to declare numbers.
- In C++, two fundamental data types, int and float, are used to represent numeric variables. But C++ is not only limited to these two data types. The data type char can also store numbers. Other data types for declaring numbers as variables are derived from int, float and char, such as short int, long int, signed int, unsigned int, double, long double, signed char, unsigned char etc. etc.
So in concluding remarks, declaring a number type variable is not only limited to using integers and floating-points data types. Rather it entirely depends on the respective programming language, and size and type of the number to be stored in the variable.
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Hi there!
For #1 the answer is the site may not be trustworthy, and you risk identity theft. If you are not sure a site legit then don't trust it. Some sites can easy to tell if they can be trusted by the amount of detail put into the site itself, but others are not so easy to tell. In general, if a site does not have https:// in the web address, but instead has just http:// (no "s" in it) then don't trust it.
For #2 the answer is to use<span> a secure browser. If the browser you are using is insecure then the info you put into a site can be compromised and stolen by the browser itself because it reads all info put on it.
For #3 the answer is i</span><span>t has a secure payment page. Again going back to the https:// vs. the http:// if the page that you pay on is not secured then your credit card info can be stolen when put in because the site without a secured page will allow others with access to see your info.
-Your friend in tech, </span>ASIAX Frequent Answerer
It has to be a cus why not check it every single day
Answer:
Explanation:
a. To initiate a DMA transfer, the CPU first sets up the DMA registers, which contain a pointer to the source of a transfer, a pointer to the destination of the transfer, and a counter of the number of bytes to be transferred. Then the DMA controller proceeds to place addresses on the bus to perform transfers, while the CPU is available to accomplish other work.
b. Once the entire transfer is finished, the DMA controller interrupts the CPU.
c. Both the CPU and the DMA controller are bus masters. A problem would be created if both the
CPU and the DMA controller want to access the memory at the same time. Accordingly, the CPU should be momentarily prevented from accessing main memory when the DMA controller seizes the memory bus. However, if the CPU is still allowed to access data in its primary and secondary caches, a coherency issue may be created if both the CPU and the DMA controller update the same memory locations.
Click-stream is the type of monitoring technique used for web surfing sessions. Browsers maintain cookies for the websites being visited from a machine ( computer, mobile... ), this technique gathers the surfing data from here. Moreover a timer is set for every web page clicked to calculate the amount of time the user stayed on it. Purchasing done by the user is also stored in the cookies section as well.