path: root/CST116F2021-Lab9/CST116F2021-Lab9.cpp

CST 116 Module 9: Lab 9
    
    16a 11.14 pg 337-338 #2, #3, #4
    
    #2
    
    #include<iostream>
#include<fstream>
#include<string>

using namespace std;


int main()

{
	int index = 0;

	int ints[10];

	ifstream inputFile;

	string fileName;

	cout << "Enter the file name having 10 ints each in new line: ";

	cin >> fileName;

	inputFile.open(fileName);

	if (!inputFile.is_open()) {
		cout << "\n\nUnable to open file. Ending..\n\n\n\n";

		return 0;
	}

	while (!inputFile.eof())

	{
		inputFile >> ints[index];

		index++;
	}

	inputFile.close();

	int smallest = ints[0], largest = ints[0];

	for (int i = 1; i < 10; i++)

	{
		if (ints[i] > largest) {
			largest = ints[i];
		}

		if (ints[i] < smallest) {
			smallest = ints[i];
		}
	}

	cout << "\nSmallest int in the file is: \n" << smallest;

	cout << "\nLargest int in the file is: \n" << largest;

	for (int i = 0; i < 10; i++) {
		for (int j = i + 1; j < 10; j++) {
			if (ints[i] > ints[j]) {
				int newInt = ints[j];

				ints[j] = ints[i];

				ints[i] = newInt;
			}
		}
	}

	cout << "\nSorted list is as below: \n\n" << endl;

	for (int i = 0; i < 10; i++) {
		cout << ints[i] << "\n";
	}

	return 0;
}
    
    #3
    
    #include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main() {
    string fileName;
    cout << "Enter file name: ";
    cin >> fileName;
    ifstream in(fileName.c_str());
    if (in.is_open()) {
        string line;
        int lineNumber = 1;
        while (getline(in, line)) {
            cout << lineNumber << " " << line << " " << line.size() << endl;
            ++lineNumber;
        }
        in.close();
    }
    else {
        cout << fileName << " is not a file that exists, terminating program..." << endl;
    }
    return 0;
}
    
    #4
    
    #include<iostream>
#include<cstring>
#include<string.h>
#include<stdlib.h>
#include<fstream>
#include<iomanip>
using namespace std;
struct PersonInfo
{
	char firstname[100];
	char LastName[100];
	char birthdate[100];
	long long Phone_number;
};
struct PersonInfo persondata[100];
class Person
{
public:
	char firstname[100];
	char LastName[100];
	char birthdate[100];
	long long Phone_number;
public:
	void AddNewPerson();
	void PrintDetails();
	void Edit_Details(int index2);
	int Find_Person(char Name[]);
public:
	int index;
};
int Person::Find_Person(char Name[])
{
	for (int i = 0; i < index; i++)
	{
		if (!(strcmp(persondata[i].firstname, Name)))
		{
			cout << "\nThe Details are Found" << endl;
			cout << "\nFirstName: " << persondata[i].firstname << endl;
			cout << "\nPhone: " << persondata[i].Phone_number << endl;
			return i;
		}
	}
	return -1;
}
void Person::Edit_Details(int index2)
{
	int option;
	cout << "\nFirstName: " << persondata[index2].firstname << endl;
	cout << "\nLastName: " << persondata[index2].LastName << endl;
	cout << "\nBirthDate: " << persondata[index2].birthdate << endl;
	cout << "\nPhone: " << persondata[index2].Phone_number << endl;
	cout << "\nSelect Any Field to Update" << endl;
	cin >> option;
	switch (option)
	{
	case 1:
		cout << "\nPlease Enter New Name" << endl;
		cin >> firstname;
		strcpy_s(persondata[index2].firstname, firstname);
		break;
	case 2:
		cout << "\nPlease Enter Last Name" << endl;
		cin >> LastName;
		strcpy_s(persondata[index2].LastName, LastName);
		break;
	case 3:
		cout << "\nPlease Enter Birthdate" << endl;
		cin >> birthdate;
		strcpy_s(persondata[index2].birthdate, birthdate);
		break;
	case 4:
		cout << "\nPlease enter Phone number" << endl;
		cin >> Phone_number;
		persondata[index2].Phone_number = Phone_number;
		break;
	}
}
void Person::AddNewPerson()
{
	cout << "\nPlease enter FirstName: " << endl;
	cin >> persondata[index].firstname;
	cout << "\nPlease Enter LastName: " << endl;
	cin >> persondata[index].LastName;
	cout << "\nPlease enter Birth Date: " << endl;
	cin >> persondata[index].birthdate;
	cout << "\nPlease enter Phone Number: " << endl;
	cin >> persondata[index].Phone_number;
	cout << "\n Added New Person Details Successfully " << endl;
}
void Person::PrintDetails()
{
	if (index == 0)
		cout << "\nEmpty" << endl;
	else
	{
		cout << "\nFirstName\tLastName\t\tBirthDate\tPhone_number" << endl;
		for (int i = 0; i < index; i++)
		{
			cout << persondata[i].firstname << "\t"
				<< persondata[i].LastName << "\t"
				<< persondata[i].birthdate << "\t"
				<< persondata[i].Phone_number << endl;
		}
	}
}
int main()
{
	Person obj;
	ifstream infile;
	int option, retval;
	obj.index = 0;
	char FirstName[100];
	infile.open("Emp_info.txt");
	ofstream outfile;
	for (int i = 0; i < 6; i++)
	{
		infile >> persondata[i].firstname;
		infile >> persondata[i].LastName;
		infile >> persondata[i].birthdate;
		infile >> persondata[i].Phone_number;
		obj.index++;
	}
	while (true)
	{
		cout << "\n------------------------------------------" << endl;
		cout << "***********Persons Information ***************" << endl;
		cout << "------------------------------------------" << endl;
		cout << "\n1. Find a person's information" << endl;
		cout << "\n2. Add a person to the database???" << endl;
		cout << "\n3. Edit a person's information" << endl;
		cout << "\n4. Display all records to the screen" << endl;
		cout << "\n5. Quit" << endl;
		cout << "\n Please Select any option" << endl;
		cin >> option;
		switch (option)
		{
		case 1:
			cout << "\nPlease enter Person FirstName: " << endl;
			cin >> FirstName;
			retval = obj.Find_Person(FirstName);
			if (retval == -1)
				cout << "\nThe Person Details not Found" << endl;
			break;
		case 2:
			obj.index++;
			obj.AddNewPerson();
			cout << "\nNew Person Details Added Successfully " << endl;
			break;
		case 3:
			cout << "\nPlease enter Person FirstName: " << endl;
			cin >> FirstName;
			retval = obj.Find_Person(FirstName);
			if (retval == -1)
				cout << "\nThe Person Details not Found" << endl;
			else
			{
				obj.Edit_Details(retval);
			}
			break;
		case 4:
			obj.PrintDetails();
			break;
		case 5:
			outfile.open("PersonReports.txt", ios::app);
			outfile << "\nFirstname" << setw(20) << "LastName" << setw(20) << "BirthDate" << setw(20) << "Phone" << endl;
			for (int i = 0; i < obj.index; i++)
			{
				outfile << persondata[i].firstname << setw(20)
					<< persondata[i].LastName << setw(20)
					<< persondata[i].birthdate << setw(20)
					<< persondata[i].Phone_number << endl;
			}
			cout << "\nPerson Details Saved Successfully in the File (PersonReports.txt)" << endl;
			exit(0);
			break;
		default:
			cout << "wrong Option" << endl;
		}
	}
}