Consider the following piece of C code running on UNIX: void main() { int pid fork(); if (pid == 0) fork(); pid fork(); if (pid != 0) fork(); exit(0); How many child processes are created when executing this program? Your answer must only contain a number. Answer:

Computer Science #include<cmath>#include<stdio.h>__global__voidprocess_kernel1(float *input1,float *input2,float *output,int datasize){int idx = threadIdx.x + blockIdx.x * blockDim.x;int idy = threadIdx.y + blockIdx.y * blockDim.y;int idz = threadIdx.z + blockIdx.z * blockDim.z;int index = idz * (gridDim.x * blockDim.x) * (gridDim.y*blockDim.y) + idy * (gridDim.x * blockDim.x) +idx;if(index<datasize)output[index] = sinf(input1[index]) + cosf(input2[index]);}__global__voidprocess_kernel2(float *input,float *output,int datasize){int idx = threadIdx.x + blockIdx.x * blockDim.x;int idy = threadIdx.y + blockIdx.y * blockDim.y;int idz = threadIdx.z + blockIdx.z * blockDim.z;int index = idz * (gridDim.x * blockDim.x) * (gridDim.y*blockDim.y) + idy * (gridDim.x * blockDim.x) +idx;if(index<datasize)output[index] = logf(input[index]);}_global__voidprocess_kernel3(float *input,float *output,int datasize){int idx = threadIdx.x + blockIdx.x *…

In C# using System; using static System.Console; using System.Globalization; class JobDemo4 {    static void Main()    {       RushJob[] jobs = new RushJob[5];       int x, y;       double grandTotal = 0;       bool goodNum;       for(x = 0 ; x < jobs.Length; ++x)       {          jobs[x] = new RushJob();          Write("Enter job number ");          jobs[x].JobNumber = Convert.ToInt32(ReadLine());          goodNum = true;          for(y = 0; y < x; ++y)          {             if(jobs[x].Equals(jobs[y]))                goodNum = false;          }          while(!goodNum)          {              Write("Sorry, the job number " +                 jobs[x].JobNumber + " is a duplicate. " +                 "\nPlease reenter ");              jobs[x].JobNumber = Convert.ToInt32(ReadLine());              goodNum = true;              for(y = 0; y < x; ++y)              {                 if(jobs[x].Equals(jobs[y]))                    goodNum = false;              }          }…

A counter variable is normally used in a program to keep track of the current count value.Create your own counter data type which is able to perform common counter operations such as increment (by one) the counter value and decrement (by one) the counter value. It is also able to set the counter to a specific value and to retrieve the counter value. The minimum value the counter can attain is zero, while the maximum value attained is stored in attribute maxValue. The class should have the following private members (attributes): (first picture) In the main program, test the workablity of your member functions by first setting an initial value to the counter. Display this value before proceeding. Then test other functions by randomly incrementing and decrementing the object’s value. Be sure to keep track of your actions. At the same time you should also make sure that your minimum value should not be less than zero. Once this is reached you will not be allowed to do further decrements.…

In c++. Read all instructions.

Arithmetic Exception   Arman has a shop where he provides stuff on rent. The whole payment system is computerised. A customer has to enter the item name, item type, cost, and the number of days they have taken the item for rent. The system then tells them the cost per day. But there is a problem with the machine that if the number of days entered is not an integer value then the system would crash. To handle this, Arman decided to upgrade the software and use exception handling in case the customer entered any invalid input it should display " Number of days x is invalid".Write a C++ program to find the item cost per day with the cost for n days given. The arithmetic exception has to be thrown if the n is less than or equal to zero.Strictly adhere to the Object-Oriented specifications given in the problem statement. All class names, member variable names, and function names should be the same as specified in the problem statement.The class Item has the following private data members.…

Which example uses the SOLID SRP principle correctly and does not violate it? (A or B) A. public class  DatabaseParser { ParseDirectoryMapFile(); //  parse directory map fileParsePasswordFile(); // parse user fileParseReviewDataFile(); // parse review data fileParseTeamFile(); // parse team CalculateGrade(); CalulateRelativeGrade(); }   B public class  DatabaseParser { ParseDirectoryMapFile(); //  parse directory map fileParsePasswordFile(); // parse user fileParseReviewDataFile(); // parse review data fileParseTeamFile(); // parse team file}  // seperately with the following: public class Calculator{ CalculateGrade(); CalulateRelativeGrade(); }

In C, what does the malloc() method do? Group of answer choices Dynamically allocates a block of memory with the specified size. Releases a block of memory with the specified size. Reconfigures a block of memory with the specified size. Determines the amount of memory used by a given structure variable

In terms of programming, it is preferable to have a deeper level of access rather than a shallower level of access; consequently, you should not base your decision just on how well something runs.

//in c# // I am having problem with my regex fitting the requirments   using System;using System.Text.RegularExpressions; namespace UsernameProcessor.Question{ public sealed class UsernameProcessorService{   /// <summary>  /// Requirements:  ///  - A valid username shall be at least 4 characters.  ///  - A valid username shall contain only letters, numbers and an optional underscore.  ///  - A valid username shall start with a letter, and shall not end with an underscore.  /// </summary>  /// <param name="username"></param>  /// <returns>Whether or not the username is valid per the above requirements.</returns>  private static Regex sUserNameAllowedRegEx = new Regex(@"^(?=[a-zA-Z])[-\w.]{0,23}([a-zA-Z\d])$", RegexOptions.Compiled);  private static Regex sUserNameIllegalEndingRegEx = new Regex(@"(\-_)$", RegexOptions.Compiled);  public static bool IsValidUsername(string username)  {        if (string.IsNullOrEmpty(username)            ||…