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1. Create two file "one.txt" and "two.txt" which contains first 10 even numbers and first ten multiples of 5 respectively; Read the two files, find the sum of all the number of these two files and store it in the variable TOTAL. Write this value in third file named "total.txt".
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2. A file contains a list of telephone numbers in the following form:
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```
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John 23456
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Ahmed 9876
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... ...
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```
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The names contain only one word and the names and telephone numbers are separated by white spaces. Write a program to read the file and output the list in the two columns.
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3. Enter 20 numbers in a file named "Numbers.txt". Ask user to enter any number and search if it exists in the file or not.
Copy file name to clipboardExpand all lines: OOP2_Lab9/main.cpp
+89-64Lines changed: 89 additions & 64 deletions
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@@ -1,4 +1,4 @@
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// All three programs are written here
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// All three programs are written here
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// A menu driven program which allows to use all programs at the same time
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// Done be Rustam Zokirov (U1910049)
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// Last change done in April 13, 2020
@@ -11,23 +11,25 @@
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usingnamespacestd;
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intmain();
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intmain();
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voidF_First_Program() {
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voidF_First_Program()
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{
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// creating a text file one.txt
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ofstream out_one;
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out_one.open("one.txt");
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for (int i = 2; i <= 2 * 10; i = i + 2) {
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for (int i = 2; i <= 2 * 10; i = i + 2)
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{
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out_one << i << endl; // writing to file first ten even numbers
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}
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out_one.close(); // closing the file
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-
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// creating a text file one.txt
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ofstream out_two;
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out_two.open("two.txt");
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for (int i = 5; i <= 5 * 10; i = i + 5) {
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for (int i = 5; i <= 5 * 10; i = i + 5)
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{
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out_two << i << endl; // writing to file first ten multiples of five
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}
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out_two.close(); // closing the file
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in_one.open("one.txt"); // opening files
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in_two.open("two.txt");
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int total = 0;
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int num1 = 0;
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int num2 = 0;
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while (in_one && in_two) {
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total += num1 + num2; // calculating the total
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while (in_one && in_two)
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{
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total += num1 + num2; // calculating the total
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in_one >> num1;
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in_two >> num2;
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}
@@ -65,111 +67,131 @@ void F_First_Program() {
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in_total >> total;
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cout << "TOTAL: " << total << "\n\n"; // displaying the total in console
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in_total.close(); // closing the file after executing
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}
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voidF_Second_Program()
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{
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voidF_Second_Program(){
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for (int k = 0; k < 1000; k++) {
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for (int k = 0; k < 1000; k++)
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{
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system("cls");
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cout << "C O N T A C T S\n" << "------------------\n" << "1. Add a contact\n" << "2. Contacts\n" << "0. Back\n" << "Your choice: \n";
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cout << "C O N T A C T S\n"
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<< "------------------\n"
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<< "1. Add a contact\n"
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<< "2. Contacts\n"
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<< "0. Back\n"
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<< "Your choice: \n";
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ofstream out_contacts("contacts.txt", ios::app);
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string name, phone;
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switch (_getch())
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{
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// case 49 is for adding a new contact into a list
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case49: {
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case49:
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{
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system("cls");
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cout << "Adding a new contact. Input a contact info:\n\n";
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cout << "Enter the name: "; cin >> name;
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cout << "Enter the phone number: "; cin >> phone;
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cout << "Enter the name: ";
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cin >> name;
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cout << "Enter the phone number: ";
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cin >> phone;
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// storing the data in file
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out_contacts << left << setw(12) << name << "\t" << phone << "\n";
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out_contacts.close(); //closing the file
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out_contacts << left << setw(12) << name << "\t" << phone << "\n";
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out_contacts.close(); //closing the file
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cout << "Successfully added!\n\n";
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system("pause");
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}
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break;
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system("pause");
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}
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break;
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case50: {
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case50:
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{
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system("cls");
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ifstream in_contacts("contacts.txt"); // getting data from the file
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while (in_contacts >> name >> phone) {
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while (in_contacts >> name >> phone)
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{
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// displaying the data
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cout << left << setw(12) << name << "\t" << phone << endl;
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}
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in_contacts.close(); // closing the file
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system("pause");
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}
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break;
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break;
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case48: {
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case48:
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{
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main(); // to back to main menu
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}
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break;
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break;
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default: {
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default:
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{
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cout << "Your choice is not available in Menu.\nPlease try one more time\n";
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system("pause");
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}
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break;
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break;
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} // switch
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} // for loop
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} // for loop
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}
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voidF_Third_Program()
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{
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voidF_Third_Program(){
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for (int k = 0; k < 1000; k++) {
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for (int k = 0; k < 1000; k++)
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{
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system("cls");
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cout << "S E A R C H I N G F O R N U M B E R \n" << "------------------------------------\n" << "1. Add numbers\n" << "2. Search for number\n" << "0. Back\n" << "Your choice: \n";
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cout << "S E A R C H I N G F O R N U M B E R \n"
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<< "------------------------------------\n"
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<< "1. Add numbers\n"
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<< "2. Search for number\n"
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<< "0. Back\n"
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<< "Your choice: \n";
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ofstream out_numbers("numbers.txt", ios::app); // the list could be contiunied after the program execution
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int numbers;
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switch (_getch())
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{
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case49: {
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case49:
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{
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system("cls");
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cout << "ENYER NUMBERS\n";
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// inputing numbers
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for (int i = 1; i <= 20; i++) {
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cout << "[ " << i << " ] -> "; cin >> numbers;
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for (int i = 1; i <= 20; i++)
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{
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cout << "[ " << i << " ] -> ";
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cin >> numbers;
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out_numbers << numbers << endl;
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}
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out_numbers.close(); //closing the file
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out_numbers.close(); //closing the file
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system("pause");
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}
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break;
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break;
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case50: {
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case50:
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{
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system("cls");
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ifstream in_numbers("numbers.txt");
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cout << "SEARCHING A NUMBER\n";
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int search_number;
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bool isAnswerHere = 0; // for finding the searching number from available list
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cout << "Enter the number to search: ";
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cout << "Enter the number to search: ";
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cin >> search_number;
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while (in_numbers) {
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while (in_numbers)
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{
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in_numbers >> numbers;
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if (search_number == numbers)
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isAnswerHere = 1;
@@ -182,28 +204,35 @@ void F_Third_Program(){
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system("pause");
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}
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break;
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break;
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case48: {
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case48:
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{
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main();
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}
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break;
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break;
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default: {
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default:
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{
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cout << "Your choice is not available in Menu.\nPlease try one more time\n";
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system("pause");
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}
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break;
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break;
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} // switch
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} // for loop
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} // for loop
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}
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intmain(){
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for (int k = 0; k < 1000; k++) {
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intmain()
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{
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for (int k = 0; k < 1000; k++)
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{
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system("cls");
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cout << "M A I N M E N U\n"<< "-------------------\n" << "1. First Program\n" << "2. Second Program\n" << "3. Third Program\n" << "Your choice: \n";
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cout << "M A I N M E N U\n"
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<< "-------------------\n"
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<< "1. First Program\n"
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<< "2. Second Program\n"
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<< "3. Third Program\n"
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<< "Your choice: \n";
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switch (_getch())
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{
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system("pause");
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break;
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case50:
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system("cls");
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F_Second_Program();
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system("pause");
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break;
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case51:
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system("cls");
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F_Third_Program();
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system("pause");
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break;
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case48:
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return0;
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break;
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default:
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cout << "Your choice is not available in Menu.\nPlease try one more time\n";
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