Question

1. Define Structure UNIT as described in the list: ınit char codease complete the question int numberOfCreditHours int semester int numberOfPreReq; pointer to number of pre-requisites eg:like char preRequisite[numberOfPreReq][10]; char* preReq int numberOfPostReq; pointer to number of post-requisites eg:like char postRequisite[numberOfPostReq] [1 0]; char* postReq NOTE: this is a BIG question and has to be asked seperately, answering only one question here. pluginfile.php/94428/mod resource/content/1/lab 6202 %20 %28file %20and%20parsing % 29.pdf Expected C++Skills to finish this activity Simple data types C++ structs C++ string class Conversion of string to values C++ arrays C++ loops C++ branching C++ in/output Background The skills that you use in this lab, will help you in accomplishing your final project. So, it is very useful if you give it enough attention and time. In the previous lab you learned how to use C++ struct to define and work with complex data structures. In fact structs are the first step to the world of object oriented programming, wherein everything is treated as a standalone object with a mumber of attributes (like the ones you create for sstruct) and routines (which is missing from the struct) In this lab, you will read information from a file line by line and then parse the strings that contain multiple information relating to a unit including the unit code, credit hours, semester of the unit, a list of prerequisites, and a list of post-requisite units. You need to extract all this information and then store it inside a struct. For this activity you need to get comfortable with some of the useful string data type functions. Therefore, I would suggest you review the string class in C++ and some of its useful functions from the following linke http://www.cplusplus.com/reference/string/string/Pkw-string You also need to learn to work with files, you can find a link quick review of file operation in the following http://www.cplusplus.com/doc/tutorial/files/ 1/2 Activities Define a struct called Unit containing the following fields I Unit code Unit credit hours Unit semester of study List of prerequisites Number of prerequisites List of post requisites Number of post requisites Inside your main function declare an array of type Uni t called units with size 20 elements. This array will contain the information related to all the units in our diploma program. Each of the elements of this array correspond with one our diploma units. IL III Inside your main function define a string named sample. This string will be used to read information from a file and then parse the information into the elements of the array units []. IV. Create and ifstream object, and then open the input file "diloma-flowchart.txt" Read each line of the input file into the string sample. The organization of each line is given as the example below V. "15FELE120; 3;2; 15FELE111; 15FELE210,15FELE 214;" This string contains the following information: 15FELE120: it is the unit code followed by a; (semicolon) to indicate the end of the unit code 3: mumber of credit hours followed by the ; (semicolon) to indicate the end of credit hours 2: semester of study followed by the; (semicolon) to indicate the end of semester of study 15FELE111: prerequisite followed by; to indicate end of prerequisites, if there were more than 1 prerequisite, then the values would be separate by a, (comma) 15FELE210,15FELE214: list of post-requisites separated with, (comma) then followed by; to indicate the end of the list VI Write a program to extract the above information from the sample string and then fill out the corresponding fields inside the fields of the array units [] In the end, write all the information contained inside the array units [], on the output

Answer 1

#include <iostream>
#include <sstream>
#include <vector>
#include <fstream>

using namespace std;

struct Unit
{
string code;
int numberOfCreditHours;
int semester;
int numberOfPreReq;
vector<string> prerequisties;
int numberOfPostReq;
vector<string> postrequisties;
};

vector<string> split (const string &s, char delim) {
vector<string> result;
stringstream ss (s);
string item;

while (getline (ss, item, delim)) {
result.push_back (item);
}

return result;
}

int main() {

vector<string> v;
vector<string> requesties;
Unit units[20];
int credithours;
int semester;
int line = 0;
string req;

ifstream file("thefile.txt");

// Processing the data in the text file to the vector of String.

// Opening the file

if (file.is_open()) {
  
string sample;
while (getline(file, sample)) {
  
v = split (sample, ';');
units[line].code = v[0];
units[line].numberOfCreditHours = stoi(v[1]);
units[line].semester = stoi(v[2]);
req = v[3];
requesties = split(req,',');
units[line].numberOfPreReq = requesties.size();
units[line].prerequisties = requesties;
req = v[4];
requesties = split(req,',');
units[line].numberOfPostReq = requesties.size();
units[line].postrequisties = requesties;

line++;
  

}

}

// Closing the file

file.close();

//Printing them into the console

for(int i=0; i<line; i++){

cout<<"Details of unit "<<i+1<<endl;
cout<<"Unit code is "<<units[i].code<<endl;
cout<<"Number of credit Hours of unit is "<<units[i].numberOfCreditHours<<endl;
cout<<"Number of Semester of unit is "<<units[i].semester<<endl;
cout<<"Number of preRequities of unit is "<<units[i].numberOfPreReq<<endl;
cout<<"Prerequesties are "<<endl;
for(int j=0; j<units[i].prerequisties.size(); i++)
cout<<units[i].prerequisties[j]<<endl;

cout<<"Number of postRequities of unit is "<<units[i].numberOfPostReq<<endl;
cout<<"Postrequesties are "<<endl;
for(int j=0; j<units[i].postrequisties.size(); i++)
cout<<units[i].postrequisties[j]<<endl;

}

return 0;
}

If you left with any doubts..feel free to ask.