Question

C++ Homework Help:

The text file that it wants you to download is this:

Name: Peter Parker
CSCI-261: 95
CSCI-262: 90.625
CSCI-442: 91.20

Name: Mary Smith
CSCI-442: 65.0
CSCI-562: 79.1234
CSCI-580: 70.24

Name: Pat Brown
CSCI-562: 95
CSCI-565: 88.0
CSCI-580: 91.20

Name: Linda Williams
CSCI-262: 65.0
CSCI-306: 67.719
CSCI-562: 70.200

Name: John Miller
CSCI-261: 95.281
CSCI-306: 90.625
CSCI-565: 91.20

Name: Patricia Johnson
CSCI-306: 65.012
CSCI-442: 84.76
CSCI-580: 70

Name: Brian Hall
CSCI-261: 65.0
CSCI-306: 84.712
CSCI-442: 75.24

Name: Sandra Nelson
CSCI-262: 95.281
CSCI-306: 90.625
CSCI-565: 91.20

Name: Jason Baker
CSCI-261: 65.012
CSCI-306: 84.76
CSCI-442: 70

Name: Gary Carter
CSCI-562: 65.0
CSCI-565: 84.712
CSCI-580: 75.24

Working with Data The given input file has records that look like this: Name: Peter Parker CSCI-261: 95 CSCI-262: 90.625 CSCI-442: 91.20 Name Mary Smith CSCI-442: 65.0 CSCI-562: 79.1234 CSCI-580: 70.24 Our goal is to loop through the file, and 1. Determine the average grade of each student. 2. Count the number of students taking undergraduate and graduate level courses. 3. Count the number of students taking each course. Undergraduate and graduate level courses Courses 500 and above are graduate level courses. The rest are undergraduate level courses. Identifying various courses - The following lists the courses offered by the CS program at Mines, as well as their abbreviations (which you need for Step 3) CSCI-261: Programming Concepts CSCI-262: Data Structures CSCI-306: Software Engineering CSCI-442: Operating Systems CSCI-562: Applied Algorithms & Data Structures CSCI-442: Operating Systems CSCI-562: Applied Algorithms & Data Structures CSCI-565: Distributed Computing Systems CSCI-580: Advanced High Performance Computing Using the provided input file, your output file should include: Name: Parker, Peter Average Score: 92.27 Name: Smith, Mary Average Score: 71.45 There are 18 instances of students taking undergraduate level courses. There are 12 instances of students taking graduate level courses. CSCI-261: Programming Concepts has 4 students. CSCI-442: Operating Systems has 5 students. Putting it all together Download the provided text file that contains example input records. (Place this file at the project level, which is the same directory as your main.cpp file. Then follow these steps. 1. Start a new project from scratch 2. Declare an ifstream Object associated with the input file; Verify that you opened the file. 3. Also declare an ofstream object associated with an output file called output.txt. 4. Loop through the input file with an EOF while loop. 5. Read each record in the file. 6. Format the name to match the output format Putting it all together Download the provided text file that contains example input records. (Place this file at the project level, which is the same directory as your main.cpp file. Then follow these steps. 1. Start a new project from scratch 2. Declare an ifstream object associated with the input file; Verify that you opened the file. 3. Also declare an ofstream object associated with an output file called output.txt. 4. Loop through the input file with an EOF while loop. 5. Read each record in the file. 6. Format the name to match the output format 7. For each of the courses, use the first part (e.g., CSCI-442) to identify the course. You then need to count the number of students in each course; since there are seven courses in total, perhaps create an array with seven elements. Hint: Write a function that takes a string as an input and returns an integer as an output. For example, if the input to the function is CSCI-261 then the output is 0. If the input is CSCI-562, then the output is 4. You can use the different course numbers in a switch statement to return the position within the array when ordered numerically. For example, perhaps have: int getCourseNumberIndex(string course); 8. Read the scores into a vector of type double and use the scores to find the average. 9. Format the data from the input file as required for the output file. 10. Write the formatted output to the output file. You can update the output file after each student's details are read and his/her average calculated. Note that the average in the output file contains exactly two decimal places. 11. You need to calculate the number of students per course, as well as the number of students in graduate and undergraduate level courses during your loop; however, you need to write these details to your output file after the loop has ended 12. Close both input and output files.

Answer 1

Code

#include<iostream>
#include<fstream>
#include<string>
#include<vector>
#include <numeric>
#include<iomanip>

using namespace std;
int getCourseNumberIndex(string course);
int main()
{
   ifstream inFile;
   ofstream outFile;

   inFile.open("grades.txt");
   outFile.open("output.txt");

   if(!inFile)
   {
       cout<<"Unable to open the file! Exiting......"<<endl;
       return 1;
   }
   string firstName,lastName,subject,name,subName;
   int underGraduateCount=0,graduateCount=0;
   double mark;
   vector<double>score;
   int subCount[]={0,0,0,0,0,0,0},index;
   string courses[]={"CSCI 261: Programing Concepts","CSCI-262: Data Structure","CSCI-262: Software Engineering","CSCI-262: Operating System","CSCI-262: Applied ALgoritham & Data Structures","CSCI-262: Distributed Computing System","CSCI-262: Advanced High Performance Computing"};
   outFile << fixed << setprecision(2) ;
   while(inFile>>name>>firstName>>lastName)
   {
       inFile>>subName>>mark;
       index=getCourseNumberIndex(subName);
       subCount[index]+=1;
       if(index<4)
           underGraduateCount++;
       else
           graduateCount++;
       score.push_back(mark);
       inFile>>subName>>mark;
       index=getCourseNumberIndex(subName);
       if(index<4)
           underGraduateCount++;
       else
           graduateCount++;
       subCount[index]+=1;
       score.push_back(mark);
       inFile>>subName>>mark;
       index=getCourseNumberIndex(subName);
       subCount[index]+=1;
       if(index<4)
           underGraduateCount++;
       else
           graduateCount++;
       score.push_back(mark);

       double average = accumulate( score.begin(), score.end(), 0.0)/score.size();
      
       score.clear();
       outFile<<"Name: "<<lastName<<", "<<firstName<<endl;
       outFile<<"Average Score: "<<average<<endl<<endl;
   }
   inFile.close();
   outFile<<"There are "<<underGraduateCount<<" instance of students taking undergraduate level courses."<<endl;
   outFile<<"There are "<<underGraduateCount<<" instance of students taking graduate level courses."<<endl<<endl;
   for(int i=0;i<7;i++)
   {
       outFile<<courses[i]<<" has "<<subCount[i]<<" students."<<endl;
   }
   outFile.close();
   return 1;
}
int getCourseNumberIndex(string course)
{
   if(course=="CSCI-261:")
       return 0;
   else if(course=="CSCI-262:")
       return 1;
   else if(course=="CSCI-306:")
       return 2;
   else if(course=="CSCI-442:")
       return 3;
   else if(course=="CSCI-562:")
       return 4;
   else if(course=="CSCI-565:")
       return 5;
   else if(course=="CSCI-580:")
       return 6;

}

output

output.txt

output Notepad File Edit Format View Help Name: Parker, Peter Average Score: 92.27 Name: Smith, Mary Average Score: 71.45 Name: Brown, Pat Average Score: 91.48 Name: Wil ms, Linda Average Score: 67.64 Name: Miller, John Average Score: 92.37 ia Average Score: 73.26 Name: Hall, Brian Average Score: 74.98 Name: Nelson, Sandr verage Score: 92.37 Name: Baker, Jason Average Score: 73.26 Name: Carter, Gary Average Score: 74.98 There are 18 instance of students taking undergraduate level courses There are 18 instance of students taking graduate level courses. CSCI 261: Programing Concepts has CSCI-262: Data Structure has students. 3 students. In1 Col 15:35 Type here to search ENG DC dx 12-06-2019

output Notepad File Edit Format View Help Name: Brown, Pat Average Score: 91.48 Name: Williams, Linda Average Score: 67.64 Name: Miller, John Average Score: 92.37 Name: Johnson, Patricia Average Score: 73.26 Name: Hall, Brian Average Score: 74.98 a 92.37 Average Name: Baker, Jason Average Score: 73.26 Name: Carter, Gary verage Score: .98 There are 18 instance of students taking undergraduate level courses There are 18 instance of students taking graduate level courses. CSCI 261 Programing Concepts has students CSCI-262: Software Engineering has 6 students. CSCI-262: Operating System has 5 students. CSCI-262: Applied ALgoritham CSCI-262: Distributed Computing System has 4 students CSCI-262: Advanced High Performance Computing has Data Structures has 4 students students. In1 Col 15:35 ENG Type here to search DC dx 12-06-2019
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