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not to know the answer.Infinite Loops)
4. Infinite loops are often used in embedded systems. How do you write an infinite loop in C?There are several solutions to this problem. My preferred solution is:
While (1){?}
Some programmers prefer the following solutions:
For (;{?}
This implementation method makes me embarrassed because this syntax does not exactly express what is going on. If a candidate provides this solution, I will use this as an opportunity to explore the basic principles of their
Conventions:1) in the following test questions, all the necessary header files have been correctly included2) Data TypeChar 1 byteInt two bytes 2 bytes (16-bit system, think integer is 2 bytes)Long int, four bytes, 4 bytesFloat four bytes 4 byetDouble, eight bytes, 8 bytesLong double 10 bytes 10 bytesPointer two bytes 2 byte (note that the address bus is only 16 bits) Question 1st: measure the test taker'
pointing to an integer (A pointer to a pointer to an intege) rD) An array of 10 integers (An array of 10 integers)E) an array with 10 pointers pointing to an integer. (An array of 10 pointersIntegers)F) A pointer to an array with 10 integers (A pointer to an array of
pointer to an intege) rD) an array of 10 integers (an array of 10 integers)E) an array with 10 pointers pointing to an integer. (An array of 10 pointers to integers)F) A pointer to an array with 10 integers (a pointer to an array of 10
, I will use this as an opportunity to explore the basic principles of their practice. If their basic answer is: "I was taught to do this, but I never thought of why. "This leaves a bad impression on me.
The third solution is to use GOTOLoop:...Goto loop;If the candidate gives the above solution, it indicates that he is an assembly language programmer (which may be a good thing) or a basic/Fortran programmer who wants to enter a new field.
Data declarations)
5. Use variable A to give the followi
embedded systems. How do you write an infinite loop in C?There are several solutions to this problem. My preferred solution is:
While (1)
{
}
Some programmers prefer the following solutions:
For (;;)
{
}
This implementation method makes me embarrassed because this syntax does not exactly express what is going on. If a candidate provides this solution, I will use this as an opportunity to explore the basic principles of their practice. If their basic answer is: "I was taught to do this, bu
several solutions to this problem.My preferred solution is:While (1){
}Some programmers prefer the following solutions:For (;;){
}This implementation method makes me embarrassed because this syntax does not exactly express what is going on. If a candidate provides this solution, I will use this as an opportunity to explore the basic principles of their practice. If their basic answer is: "I was taught to do this, but I never thought of why. "This leaves a bad impression on me.The third solution
"Windows 10 Anniversary Update Official Edition"Released August 2, 2016, Development Code Redstone 1 (RS1), System version number version 1607, compile build number build 14393.Install the system need to download WIN10 ISO image, version number 1607, due to the new Apple MacBook Pro system requirements or personal practice to find the latest version of the ISO. Baidu Search, all is the old resources, or tri
[Reprinted] 10 useful results in Web development [Source Code download] and Java Web source code download
In our work, we may use various interactive effects. However, these effects often occur when I read articles, but I cannot remember where I am at half past one, so it is necessary to develop the habit of organizing knowledge. This article recommends 10WebUsef
and format it into the same file system as RAID 1. ThenWe will simulate a partition failure and use the command
Mdadm -- fail/dev/md1/dev/sda7. The sda7 in md1 is crashed.
Now we need to use the partition just now,Install a good disk and then a bad disk to avoid secondary harm.
Mdadm -- add/dev/md1/dev/sda9 [after installation, it will automatically synchronize with another disk]
Remove a bad Disk:
mdadm --remove /dev/md1 /dev/sda7
Because RAID 0
value should be consistent with the return value type.
Back to top three, formal parameters and actual parameters 1. Basic Concepts1> formal parameters: When defining a function, the variable defined in the parentheses () following the function name is called the formal parameter, or the formal argument2> actual parameter: The value passed in when the function is called is called the actual parameter, or the argument2. The number of arguments passed when calling a function must be consiste
Graphic RAID 0, RAID 1, RAID 5, RAID 10
RAID (Redundant Array of Independent Disk Independent Redundant Disk Array) technology was proposed by the University of California at Berkeley in 1987, initially to combine small cheap disks to replace large expensive disks, at the same time, we hope that when the disk fails, data access will not be damaged and a certain level of data protection technology will be de
Raid 10:
Make at least four hard disks into RAID 1. If there are four hard disks, there will be two to rand1 disks. If there are eight hard disks, there will be four to raid 1 disks, the biggest purpose of raid1 is to ensure high data security and high read/write speed, but to sacrifice half of the disk space. If the number 12345678 is written to a request, the write method is as follows:
Because RAID 0 is
Array de-weight and sort:var arr = [1,5,1,2,6,8,1,81,9,0];for (var i=0;iRandom number between 0~10:Alert (Math.Round (Math.random () *10));Math.random () random decimals between 0~1Math.Round () roundingThe most occurrences of characters and times in a string:var str = '
Title Addresshttps://pta.patest.cn/pta/test/16/exam/4/question/6785-16 Sort with Swap (0, I) (25 points)Given any permutation of the numbers {0, 1, 2,..., N-1N? 1}, it is an easy-to-sort them in increasing order. But what if was the only operation that was allowed to use Swap(0, *) ? For example, to sort {4, 0, 2, 1,
a "" symbol, passed by "reference" rather than "value".10. Fully understand the dangers of "magic quotes" and SQL injection.I want to read that the developers here are already very familiar with SQL injection. But I'm still listing this here because it's a bit hard to understand.Magic quotation marks (Magic Quote) is a process that automatically escapes data into a PHP script. It is best to avoid escaping while encoding and escaping as needed at run
, only count and index2, Tup1.count (Element) and Tup1.index (element), these two and list almost I don't have to say, give an example everyone to see just fine3, the list and the meta-Group of the mutual conversion, in fact, this also has nothing to say, but after the estimate will also be used, so it is said to everyone! Continue to see examples:See, is not very simple, just use list and tuple can4, finally to everyone to explain the next section, this is still relatively good, we look at the
The sum of factorialEnter N, calculate s=1! +2! +3! + ... +n! The last 6 bits (excluding the leading 0). N≤10 6, n! SaidThe product of the first n positive integers.Sample input:10Sample output:Package Demo;import Java.util.scanner;public class Demo02 {public static void main (string[] args) {Scanner in=new Scanner ( system.in); int n=in.nextint (); Long sum=0;fo
are often used in embedded systems. How do you write an infinite loop in C?There are several solutions to this problem. My preferred solution is:
While (1){?}
Some programmers prefer the following solutions:
For (;;){?}
This implementation method makes me embarrassed because this syntax does not exactly express what is going on. If a candidate provides this solution, I will use this as an opportunity to explore the basic principles of their practice. If their basic answer is: "I was taught to
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