lab_program_8_11_data_visualization.cpp

'''


8.11 LAB*: Program: Data visualization


(1) Prompt the user for a title for data. Output the title. (1 pt)

Ex:

Enter a title for the data:
Number of Novels Authored
You entered: Number of Novels Authored

(2) Prompt the user for the headers of two columns of a table. Output the column headers. (1 pt)

Ex:

Enter the column 1 header:
Author name
You entered: Author name

Enter the column 2 header:
Number of novels
You entered: Number of novels

(3) Prompt the user for data points. Data points must be in this format: string, int. Store the information before the comma into a string variable and the information after the comma into an integer. The user will enter -1 when they have finished entering data points. Output the data points. Store the string components of the data points in a vector of strings. Store the integer components of the data points in a vector of integers. (4 pts)

Ex:

Enter a data point (-1 to stop input):
Jane Austen, 6
Data string: Jane Austen
Data integer: 6

(4) Perform error checking for the data point entries. If any of the following errors occurs, output the appropriate error message and prompt again for a valid data point.

If entry has no comma
Output: Error: No comma in string. (1 pt)
If entry has more than one comma
Output: Error: Too many commas in input. (1 pt)
If entry after the comma is not an integer
Output: Error: Comma not followed by an integer. (2 pts)

Ex:

Enter a data point (-1 to stop input):
Ernest Hemingway 9
Error: No comma in string.

Enter a data point (-1 to stop input):
Ernest, Hemingway, 9
Error: Too many commas in input.

Enter a data point (-1 to stop input):
Ernest Hemingway, nine
Error: Comma not followed by an integer.

Enter a data point (-1 to stop input):
Ernest Hemingway, 9
Data string: Ernest Hemingway
Data integer: 9

(5) Output the information in a formatted table. The title is right justified with a setw() value of 33. Column 1 has a setw() value of 20. Column 2 has a setw() value of 23. (3 pts)

Ex:

        Number of Novels Authored
Author name         |       Number of novels
--------------------------------------------
Jane Austen         |                      6
Charles Dickens     |                     20
Ernest Hemingway    |                      9
Jack Kerouac        |                     22
F. Scott Fitzgerald |                      8
Mary Shelley        |                      7
Charlotte Bronte    |                      5
Mark Twain          |                     11
Agatha Christie     |                     73
Ian Flemming        |                     14
J.K. Rowling        |                     14
Stephen King        |                     54
Oscar Wilde         |                      1

(6) Output the information as a formatted histogram. Each name is right justified with a setw() value of 20. (4 pts)

Ex:

         Jane Austen ******
     Charles Dickens ********************
    Ernest Hemingway *********
        Jack Kerouac **********************
 F. Scott Fitzgerald ********
        Mary Shelley *******
    Charlotte Bronte *****
          Mark Twain ***********
     Agatha Christie *************************************************************************
        Ian Flemming **************
        J.K. Rowling **************
        Stephen King ******************************************************
         Oscar Wilde *








'''






#include <iostream>
#include <string>
#include <vector>
#include <sstream>
#include <iomanip>
using namespace std;


void printTable(string title, string header1, string header2, vector<string>& col1, vector<int>& col2) {
   cout << setw(33) << title << endl;
   cout << left << setw(20) << header1 << '|';
   cout << right << setw(23) << header2 << endl;
   cout << setfill('-') << setw(44) << "" << endl;
   cout << setfill(' ');
   
   for (unsigned int i = 0; i < col1.size(); i++) {
      cout << left << setw(20) << col1[i] << '|';
      cout << right << setw(23) << col2[i]  << endl;
   }
}


void plot(vector<string>& col1, vector<int>& col2) {
   for (unsigned int i = 0; i < col1.size(); i++) {
      cout << right << setw(20) << col1[i] << ' ';
      for (int j = 0; j < col2[i]; j++)
         cout << '*';
      cout << endl;
   }
   
   
}



int main() {
   string title, header1, header2;
   vector<string> names;
   vector<int> nums;
   string name;
   int num;
   string line;
   istringstream iss;
   
   cout << "Enter a title for the data:" << endl;
   getline(cin, title);
   cout << "You entered: "<< title << endl;
   
   cout << endl;

   cout << "Enter the column 1 header:" << endl;
   getline(cin, header1);
   cout << "You entered: "<< header1 << endl;
   
   cout << endl;
   
   cout << "Enter the column 2 header:" << endl;
   getline(cin, header2);
   cout << "You entered: "<< header2 << endl;
   
   cout << endl;
   
   cout << "Enter a data point (-1 to stop input):" <<endl;
   getline(cin, line);
   while (line != "-1") {

      int commaCount = 0;
      for (unsigned int i = 0; i < line.size(); i++) {
         if (line[i]==',') {
            commaCount++;
         }  
      }
      
      
      if (commaCount == 0) 
         cout << "Error: No comma in string." << endl;
      else if (commaCount > 1)
         cout << "Error: Too many commas in input." << endl;
      else {
         
         iss.clear();
         iss.str(line);
         
         getline(iss, name, ',');
         iss >> num;
         
         if (iss.fail()) {
            cout << "Error: Comma not followed by an integer." << endl;
         }
         else {
            names.push_back(name);
            nums.push_back(num);
            cout << "Data string: " << name << endl;
            cout << "Data integer: " << num << endl; 
         }         
         
      }
      
      cout << endl;

      cout << "Enter a data point (-1 to stop input):" <<endl;
      getline(cin, line);
   }
   
   cout << endl;
   
   printTable(title, header1, header2, names, nums);
   
   cout << endl;
   
   plot(names, nums);
   
   return 0;
}