Source Code

#include <iostream>

#include <cstdio>

#include <cstdlib>

#include <cstring>

#include <iomanip>

using namespace std;

struct node

{

string date;

int test, cases, recovered, death;

struct node *next;

};

typedef struct node node;

node *corona = NULL;

void swap(node **head, node *node2)

{

node *current;

if (*head == NULL || (*head)->date > node2->date)

{

node2->next = *head;

*head = node2;

}

else

{

current = *head;

while (current->next != NULL && current->next->date <= node2->date)

{

current = current->next;

}

node2->next = current->next;

current->next = node2;

}

}

void sort(node **head)

{

node *sorted = NULL;

node *current = *head;

while (current != NULL)

{

node *next = current->next;

swap(&sorted, current);

current = next;

}

*head = sorted;

}

void insert(node **head, string date, int test, int cases, int recovered, int death)

{

node *node2 = new node();

node2->date = date;

node2->test = test;

node2->cases = cases;

node2->recovered = recovered;

node2->death = death;

node2->next = (*head);

(*head) = node2;

}

void new_report()

{

string date;

int N, test, cases, recovered, death;

cout << "\nHow many reports do you want to add: ";

cin >> N;

for (int i = 0; i < N; i++)

{

cout << endl;

cout << "Date of report (eg: 07/11/20): ";

cin.ignore();

cin >> date;

cout << "Number of New Tests: ";

cin >> test;

cout << "Number of New Identified: ";

cin >> cases;

cout << "Number of Recovery: ";

cin >> recovered;

cout << "Number of Death: ";

cin >> death;

insert(&corona, date, test, cases, recovered, death);

}

sort(&corona);

}

void update_report(node **head)

{

bool found = false;

string date;

int test, cases, recovered, death;

cout << endl;

cout << "\nDate of report to Update (eg: 07/11/20): ";

cin.ignore();

cin >> date;

node *current = *head;

while (current != NULL)

{

if (current->date == date)

{

found = true;

cout << "Number of New Tests: ";

cin >> test;

cout << "Number of New Identified: ";

cin >> cases;

cout << "Number of Recovery: ";

cin >> recovered;

cout << "Number of Death: ";

cin >> death;

current->test = test;

current->cases = cases;

current->recovered = recovered;

current->death = death;

cout << "\nUpdated successfully." << endl;

return;

}

current = current->next;

}

if (!found)

cout << "\nNo report of " << date << " found in database." << endl;

}

void delete_report(node **head)

{

string date;

cout << "\nDate of report to Delete (eg: 07/11/20): ";

cin.ignore();

cin >> date;

node *temp = *head, *prev;

if (temp != NULL && temp->date == date)

{

*head = temp->next;

free(temp);

cout << "\nDeleted successfully.\n" << endl;

return;

}

while (temp != NULL && temp->date != date)

{

prev = temp;

temp = temp->next;

}

if (temp == NULL)

{

cout << "\nNot found!\n" << endl;

return;

}

prev->next = temp->next;

free(temp);

cout << "\nDeleted successfully.\n" << endl;

}

void view_report(node **head)

{

int N;

cout << "\nChoose an option: " << endl;

cout << "1. View report of one specific date" << endl;

cout << "2. View report of multiple days\n"

<< endl;

cout << "Enter an Option: ";

cin >> N;

if (N == 1)

{

bool printed = false;

string date;

cout << endl;

cout << "\nDate of report to Show (eg: 07/11/20): ";

cin.ignore();

cin >> date;

node *current = *head;

while (current != NULL)

{

if (current->date == date)

{

cout << endl;

cout << ">> Report of " << current->date << ':' << endl;

cout << "\tNew Test: " << current->test << endl;

cout << "\tNew Indentified: " << current->cases << endl;

cout << "\tNew Recovered: " << current->recovered << endl;

cout << "\tNew Death: " << current->death << endl;

printed = true;

break;

}

current = current->next;

}

if (!printed)

cout << "\nNo result found!" << endl;

}

else if (N == 2)

{

bool printed = false;

string date1, date2;

cout << "\nDate of report Starting From (eg: 07/11/20): ";

cin.ignore();

cin >> date1;

cout << "Date of report Ending to (eg: 07/11/20): ";

cin.ignore();

cin >> date2;

node *current = *head;

while (current != NULL)

{

if (current->date >= date1 && current->date <= date2)

{

cout << endl;

cout << "Report of " << current->date << ':' << endl;

cout << "\tNew Test: " << current->test << endl;

cout << "\tNew Identified: " << current->cases << endl;

cout << "\tNew Recovered: " << current->recovered << endl;

cout << "\tNew Death: " << current->death << endl;

printed = true;

}

if (current->date > date2)

break;

current = current->next;

}

if (!printed)

cout << "\nNo result found!\n" << endl;

}

else

{

cout << "\nInvalid option! Please try again.\n" << endl;

view_report(&corona);

}

}

void view_summary(node **head)

{

int ttest = 0, tcases = 0, trecovered = 0, tdeath = 0;

node *temp = *head;

while (temp != NULL)

{

ttest += temp->test;

tcases += temp->cases;

trecovered += temp->recovered;

tdeath += temp->death;

temp = temp->next;

}

cout << "\nOverall Summary Report:\n" << endl;

cout << "Total Sample Tests: " << ttest << endl;

cout << "Total Identified: " << tcases << endl;

cout << "Total Recoveries: " << trecovered << endl;

cout << "Total Deaths: " << tdeath << endl;

cout << "\nSample Tests vs. Total Identified Ratio: " << fixed << setprecision(2) << ((tcases * 100.0) / ttest) << '%' << endl;

}

int main()

{

int option = 0;

while (option != 6)

{

cout << "Choose an option:\n" << endl;

cout << "1. Add new report in database" << endl;

cout << "2. Update report from database" << endl;

cout << "3. Delete report from database" << endl;

cout << "4. View report of specific date(s)" << endl;

cout << "5. View overall summary report" << endl;

cout << "6. Exit\n" << endl;

cout << "Enter your option: ";

cin >> option;

if (option > 6 || option < 1)

{

cout << "\nInvalid option! Please try again.\n" << endl;

option = 0;

continue;

}

else if (option == 1)

new_report();

else if (option == 2)

update_report(&corona);

else if (option == 3)

delete_report(&corona);

else if (option == 4)

view_report(&corona);

else if (option == 5)

view_summary(&corona);

else if (option == 6)

break;

}

return 0;

}