----it is not working on x code- #1 says 2 unused variables---- C++ -----------

Question

----it is not working on x code- #1 says 2 unused variables---- C++ ----------- These 3 questions were answered incorrectly in the expert q qnd a- they had errors . please help if you are another expert out there. this should all be in c++

THIS IS THE CODE THEY GAVE ME BELOW

this code is incorrect

John Smith 10 15
Sarah Johnson 40 12
Mary Taylor 27 13
Jim Stewart 25 8

______________

#include

#include

#include

using namespace std;

//Function declaration

void readData(ifstream& dataIn,ofstream& dataOut);

int main() {

string fname,lname;

double workingHrs,hourlyRate;

//defines an input stream for the data file

ifstream dataIn;

  

//Defines an output stream for the data file

ofstream dataOut;

//Setting the precision

dataOut<

//Opening the input file

dataIn.open("employees.txt");

  

  

//checking whether the file name is valid or not

if(dataIn.fail())

{

cout<<"** File Not Found **";

return 1;

}

else

{

//creating and Opening the output file

dataOut.open("results.txt");

readData(dataIn,dataOut);

//Closing the intput file

dataIn.close();

//Closing the output file.

dataOut.close();

  

}

  

return 0;

}

//This function will read and process the data and write to outfile

void readData(ifstream& dataIn,ofstream& dataOut)

{

string fname,lname;

double workingHrs,hourlyRate;

while(dataIn>>fname>>lname>>workingHrs>>hourlyRate)

{

dataOut<

}

}

QUESTION 2

this code is incorrect

#include
#include
#include

using namespace std;

int getData(int *arr) {
   cout << "Enter file name: ";
   string filename;
   cin >> filename;
   ifstream in(filename.c_str());
   int size = 0;
   if(in.is_open()) {
       int score;
       string temp;
       while(in >> temp >> temp >> score) {
           arr[size++] = score;
       }
   } else {
       cout << "can not open " << filename << " to read" << endl;
   }
   return size;
}

double avg(int *arr, int size) {
   double total = 0;
   for(int i = 0; i < size; ++i) {
       total += arr[i];
   }
   return total/size;
}

int max(int *arr, int size) {
   int temp = arr[0];
   for(int i = 0; i < size; ++i) {
       if(arr[i] > temp) {
           temp = arr[i];
       }
   }
   return temp;
}

int main() {
   int arr[1000];
   int size = getData(arr);
   cout << "Average score is " << avg(arr, size) << endl;
   cout << "Maximum score is " << max(arr, size) << endl;
   return 0;
}

QUESTION 3

THIS IS THE CODE THEY GAVE ME

incorrect code below

#include
#include
#include
#include
#include

void countchar(char *filename)
{
   ifstream fin(filename);
   char ch;
   std::string line;
   int i,j,alpha=0,others=0,digi=0,lines=0;
   cout<<"The orginal text is"<    while(fin.get(ch))
   {
   i=ch;
   cout<   
   if(i>64&&i<91||i>96&&i<123)
       alpha++;
   else
   if(i>47&&i<58)
       digi++;
   else
   if (i == ' ')
       lines++;
   else
       others++;

}
fin.clear();
fin.seekg (0, ios::beg);
cout<

cout<

cout<

}

int main()
{
  
   char *filename="nameofyourfile.txt";
   char a;
   countchar(filename);
   return 0;
   getch();
}

Question 1: Consider a text file named "employees.txt". The file contains data organized according to the following format: John Sarah Mary Jim Smith Johnson Taylor Stewart 10 40 27 25 15 12 13 For instance, "John" is the first name, "Smith" is the last name, "20% is the number of hours per w eek, and yis the hourly rate. Write a program that computes the weekly salary of each employee. The program prints the first name, last name, and weekly salary of each employee in a file named "results.txt". You must use a function to read/process the data from the input file and this function must have parameters

Explanation / Answer

Please find my answer for Q3.

Please repost others in separate post.

The Below given code should satisfy all your needs... let me know if you need any help on this!

#include<iostream>
#include<string>
#include<fstream>

using namespace std;

char toUpper(char ch) { //convert a char to upper case
   if (ch >= 'a' && ch <= 'z')
       ch = ch - 32;
   return ch;
}

char toLower(char ch) { //conert a char to lower case
   if (ch >= 'A' && ch <= 'Z')
       ch = ch + 32;
   return ch;
}
int main() {
   string inFile;
   cout << "Enter input file name: ";
   cin >> inFile; //read file name
   ifstream in (inFile.c_str()); //open infile
   ofstream o1 ("Output1"); //open out files
   ofstream o2 ("Output2");
   ofstream o3 ("Output3");

   int charCount = 0;
   int lineCount = 0;
   int maxLineSize = 0;
   int currLineSize = 0;
   char ch;
   while (in >> noskipws >> ch) { //loop for each charecters
       o1 << toUpper(ch); //print lower to file 1
       o2 << toLower(ch); //print upper to file 2
       if (ch == ' '){ //count line when new line feed is encounters
           lineCount ++;
           if (currLineSize > maxLineSize)
               maxLineSize = currLineSize;
           currLineSize = 0;
       }
       else { //for other char count chars
           charCount ++;
           currLineSize ++;
       }
   }
   o1.close();
   o2.close();

   o3 << "Total number of char: " << charCount << endl;
   o3 << "Total number of lines: " << lineCount << endl;
   o3 << "Max verse size: " << maxLineSize << endl;
  
   cout << "Total number of char: " << charCount << endl;
   cout << "Total number of lines: " << lineCount << endl;
   cout << "Max verse size: " << maxLineSize << endl;

   o3.close();
}

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