Having issues with serial search.

ekincaid2002 · 03-19-2016, 03:39 PM

if i only enter 1 set of records i get a correct return but if i enter more than one set of record it only reconizes the last set. so when i search for student id the only one thats in the file that works correctly and displays the correct output is the last studentid entered rest dont work properly

Code:

oid loadarray() {
	fin.open("E:\\studentidarray.txt");
	
	string word;
	vector<string> myWords;
	while (fin >> word)
	{
		myWords.push_back(word);
		
	}
	fin.close();
	
}



void search_data()
{
	match = 'N';
	row = 0;
	maxsize = 8;

	cout << " enter a student id to be searched:    ";
	cin >> students;
									

	while (match == 'N' && row < maxsize)
	{
		if (students == studentid)
		{
			match = 'Y';
		}
		else
		{
			row = row + 1;
		}

		if (match == 'Y')
		{
			sucessful();
		}
		else
		{
			unsucessful();
		}
	}

			cout << " Another Search? ";
			cin >> moresearch;
			moresearch = toupper(moresearch);

	while (moresearch != 'Y' && moresearch != 'N')
		{
			cout << " Error ";
			cout << " Please enter Y or N as a response ";
			cin >> moresearch;
			moresearch = toupper(moresearch);
		}
	if (moresearch == 'Y')
		{
			search_data();
		}
}

void sucessful()
{
	cout << "student was found!" << endl << endl;
	if (gpa >= 3.65)
	{
		cout << firstname << " " << lastname << " " << "is on the Dean's List." << endl;
	}
	if(gpa >= 2.0 || gpa < 3.65)
	{
		cout << firstname << " " << lastname << " " << "is an average student." << endl;
	}
	if (gpa < 2.0)
	{
		cout << firstname << " " << lastname << " " << "is on Academic Probation." << endl;
	}


}
void unsucessful()
{
	cout << "Student ID was not found" << endl;
	;
}

ekincaid2002 · 03-19-2016, 04:12 PM

in otherwords seems like its not starting at the first line each search feel like its starting at the last line and acting like the rest are invalid because its starting at the end line.

michaelk · 03-19-2016, 06:59 PM

What type of variable is studentid? How is it being assigned?

Please post your entire program.

ekincaid2002 · 03-20-2016, 08:49 AM

Code:

/*
Variable								Represents

firstname								First Name
lastname								Last Name
studentid								Student ID
gpa										Grade point average
match									search match
morerecords								More entries for file
moresearch								Reply for additional searches
reply									User Response
row										row of array
maxsize									Max size of array
students								target student in array

*/

#include <vector>
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
ifstream fin;
ofstream fout;

double studentid, students, gpa, row, maxsize;
char reply, match, wait, moresearch;
string firstname, lastname;


void build();
void loadarray();
void search_data();
void sucessful();
void unsucessful();

int main()
{
	system("cls");
	cout << "  Student Academic Standing  " << endl;
	cout << "Is this the correct program? (Y/N) ";
	cin >> reply;
	reply = toupper(reply);
	while (reply != 'Y' && reply != 'N')
	{
		cout << " Error:" << endl;
		cout << " Please Enter Y or N";
		cin >> reply;
		reply = toupper(reply);
	}
	if (reply == 'Y')
	{
		cout << " Does a file need to be built?  " << endl;
		cin >> reply;
		reply = toupper(reply);
		while (reply != 'Y' && reply != 'N')
		{
			cout << " Error:" << endl;
			cout << " Please Enter Y or N";
			cin >> reply;
			reply = toupper(reply);
		}
		if (reply == 'Y')
		{
			

			build();
			
		}
		else
		{
			loadarray();
			search_data();
			
		}
		
			return 0;
		
	}
}
void build()
{

	fout.open("E:\\studentidarray.txt");
	while (reply == 'Y')
	{
		
		cout << " Please Enter your Student ID   ";
		cin >> studentid;
		cout << " Please Enter your Last Name   ";
		cin >> lastname;
		cout << " Please Enter your First Name    ";
		cin >> firstname;
		cout << " Please Enter Your GPA        ";
		cin >> gpa;


		while (gpa <= 0 || gpa >= 4)
		{
			cout << " Error ";
			cout << " Please enter a gpa between 0 - 4.0 ";
			cin >> gpa;
		}
		fout << studentid << " " << lastname << " " << firstname << " " << gpa << endl;
		cout << " Another Record? ";
		cin >> reply;
		reply = toupper(reply);
		while (reply != 'Y' && reply != 'N')
		{
			cout << " Error ";
			cout << " Please enter Y or N as a response ";
			cin >> reply;
			reply = toupper(reply);
		}
		if (reply == 'N')
		{
			loadarray();
			search_data();
		}
		
	}
		
		fout.close();
}

void loadarray() {
	fin.open("E:\\studentidarray.txt");
	
	string word;
	vector<string> myWords;
	while (fin >> word)
	{
		myWords.push_back(word);
		
	}
	fin.close();
	
}



void search_data()
{
	match = 'N';
    row = 0;
	maxsize = 8;

	cout << " enter a student id to be searched:    ";
	cin >> students;
									

	while (match == 'N' && row < maxsize)
	{
		if (students == studentid)
		{
			match = 'Y';
		}
		else
		{
			row = row + 1;
		}

		if (match == 'Y')
		{
			sucessful();
		}
		else
		{
			unsucessful();
		}
	}

			cout << " Another Search? ";
			cin >> moresearch;
			moresearch = toupper(moresearch);

	while (moresearch != 'Y' && moresearch != 'N')
		{
			cout << " Error ";
			cout << " Please enter Y or N as a response ";
			cin >> moresearch;
			moresearch = toupper(moresearch);
		}
	if (moresearch == 'Y')
		{
			search_data();
		}
}

void sucessful()
{
	cout << "student was found!" << endl << endl;
	if (gpa >= 3.65)
	{
		cout << firstname << " " << lastname << " " << "is on the Dean's List." << endl;
	}
	if(gpa >= 2.0 || gpa < 3.65)
	{
		cout << firstname << " " << lastname << " " << "is an average student." << endl;
	}
	if (gpa < 2.0)
	{
		cout << firstname << " " << lastname << " " << "is on Academic Probation." << endl;
	}


}
void unsucessful()
{
	cout << "Student ID was not found" << endl;
	;
}

michaelk · 03-20-2016, 09:45 AM

Your original search data function does not use the student array file. It only uses the values of the last entered student from your build function. Since Each student's data is a single string you need to parse it to separate the values.

ekincaid2002 · 03-20-2016, 10:01 AM

how do i do that and have all 4 elements still be linked as one entry? like i have to run a search on the id and the output that is displayed is based on the gpa of that student id. just realised i have 2 search data in here the one with match is the correct one im using.

michaelk · 03-20-2016, 10:39 AM

There are many ways to split a string. Since we do not know what you have learned in class I'm not going to just provide you with an answer.

ekincaid2002 · 03-20-2016, 10:50 AM

array [] we have learned but i'm not good with that and don't really understand it well. should studentid be implemented like studentid[] ? and if i do it that way will the other elements still be able to be referenced by the id?

michaelk · 03-20-2016, 07:46 PM

No. What are you supposed to do with the vector myWords? Was that part of the assignment?