Free Programming Source Codes and Computer Programming Tutorials

Monday, April 5, 2021

Decimal To Roman Numeral in C++

A simple program that will ask the user to give a number in decimal and convert it into Roman Numeral Equivalent using C++ programming language.

I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me at the following email address for further details. If you want to advertise on my website kindly contact me also in my email address also. Thank you.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com

Program Listing

// roman.cpp

// Prof. Jake R. Pomperada, MAED-IT,MIT

// www.jakerpomperada.com / www.jakerpomperada.blogspot.com

// jakerpomperada@gmail.com

// Bacolod City, Negros Occidental Philippines

#include <iostream>

#include <string>

using namespace std;

string decimal_to_roman(int x) {

int dec[13] = {1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1};

string num[13] = {"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"};

string numeral;

for(int i = 0; i < 13; i++) {

while (x >= dec[i]) {

x -= dec[i];

numeral.append(num[i]);

}

return numeral;

}

int main() {

int decimal=0;

cout <<"\n\n";

cout <<"\tDecimal To Roman Numeral in C++";

cout <<"\n\n";

cout << "\tGive a Number : ";

cin >> decimal;

cout << "\n";

cout << "\tThe given number is " << decimal;

cout << "\n";

cout << "\tThe Roman Numeral Value is "<< decimal_to_roman(decimal);

cout << "\n\n";

cout <<"\tEnd of Program";

}

Password in C++

A simple password program that I wrote in the C++ programming language.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com

Program Listing

password.cpp

// password.cpp

// Prof. Jake R. Pomperada, MAED-IT,MIT

// www.jakerpomperada.com / www.jakerpomperada.blogspot.com

// jakerpomperada@gmail.com

// Bacolod City, Negros Occidental Philippines

#include <iostream>

#include <string>

using namespace std;

int main()

{

string password = "123";

string passwordEntry;

int attempts = 0;

cout <<"\n\n" ;

cout << "\tPassword in C++\n\n";

cout << "\tPlease enter your password: ";

getline(cin, passwordEntry, '\n');

while ( passwordEntry != password && attempts <=2 )

{

cout << "\n";

cout <<"\tPassword Attempt No. : " <<attempts+1;

cout << "\n";

cout << "\tEnter Password Again : ";

getline(cin, passwordEntry, '\n');

attempts++;

}

if ( passwordEntry == password && attempts <=3 )

{

cout << "\n";

cout << "\tAccess Granted in the System.";

}

else

{

cout << "\n";

cout << "\tSorry, you are only allowed 3 password login attempts.";

cout << "\n\n";

}

Saturday, April 3, 2021

Java Programming Language (Tagalog)

Count Number of Words From a Text File in Python

In this program I will show you how to count the number of words from a text file using Python programming language.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com

Program Listing

data.txt

Python Programming is Fun and Profit
Professor Jake Rodriguez Pomperada

reading_textfile.py

# reading_textfile.py
# Mr. Jake Rodriguez Pomperada, MAED-IT, MIT
# www.jakerpomperada.com www.jakerpomperada.blogspot.com
# jakerpomperada@gmail.com
# April 3, 2021
# Bacolod City, Negros Occidental

print()
print("\tCount Number of Words From a Text File in Python");
print()
try:
    print()
    fr = open("data.txt","r")
    for line in fr:
        line = line.strip("\n")
        print(line.upper())
        words = line.split()

        print()
        print('Total number of words: ', len(words))
        print("-----------------------------------------------")
        print()
        print("\tEND OF PROGRAM");
        print()
    fr.close()
except FileNotFoundError:
    print("File is not found")

Positive Mindset Sa Buhay

Factorial Using Functions in Go

Two Dimensional Arrays in Go

Factorial Using Functions in Go

A simple program that I wrote to solve a factorial value of a given number using a function and recursion concepts in go programming language.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com

Program Listing

/* function_recursion.go
Prof. Jake R. Pomperada, MAED-IT, MIT
www.jakerpomperada.com / www.jakerpomperada.blogspot.com
jakerpomperada@gmail.com
March 31, 2021  Saturday 10:18 PM
Bacolod City
*/

package main

import "fmt"

func factorial_solve(num int) int {
    if num == 1 || num == 0 {
        return num
    }
    return num * factorial_solve(num-1)
}

func main() {
    fmt.Printf("\n")
    fmt.Print("\tRecursion Using Function in Go\n\n")
    fmt.Printf("\t %d\n", factorial_solve(3))
    fmt.Printf("\t %d\n", factorial_solve(4))
    fmt.Printf("\t %d\n", factorial_solve(5))
    fmt.Printf("\t %d\n", factorial_solve(6))
    fmt.Printf("\t %d\n", factorial_solve(7))
    fmt.Printf("\n")
    fmt.Printf("\tEnd of Program")
    fmt.Printf("\n")
}

Two Dimensional Arrays in Go

In this article I would like to share how to declare and use two-dimensional arrays using Go programming language.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com

Program Listing

package main

import "fmt"

func main() {
    /* An array with 3 rows and 3 columns
       with initialize values
    */
    var a = [3][3]int{{10, 20, 30}, {40, 50, 60}, {70, 80, 90}}

    var i, j int

    fmt.Print("\n")
    fmt.Print("\tExample of Two Dimensional Arrays in Go\n\n")
    /* output each array element's value */
    for i = 0; i < 3; i++ {
        for j = 0; j < 3; j++ {
            fmt.Printf("\ta[%d][%d] = %d\n", i, j, a[i][j])
        }
    }
    fmt.Print("\n\n")
    fmt.Print("\tEnd of Program")
    fmt.Print("\n")
}

Friday, April 2, 2021

Simple CRUD With Search in PHP and MySQL (Tagalog)

Simple CRUD with Search in PHP and MySQL

A simple crud and search in php and mysql program.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com

Program Listing

crud_search.sql

-- phpMyAdmin SQL Dump

-- version 5.0.2

-- https://www.phpmyadmin.net/

-- Host: 127.0.0.1

-- Generation Time: Apr 01, 2021 at 11:29 PM

-- Server version: 10.4.14-MariaDB

-- PHP Version: 7.4.10

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";

START TRANSACTION;

SET time_zone = "+00:00";

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;

/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;

/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;

/*!40101 SET NAMES utf8mb4 */;

-- Database: `crud_search`

-- --------------------------------------------------------

-- Table structure for table `contacts`

CREATE TABLE `contacts` (

`id` int(11) NOT NULL,

`name` varchar(100) NOT NULL,

`email` varchar(100) NOT NULL,

`contact` varchar(50) NOT NULL

) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Indexes for dumped tables

-- Indexes for table `contacts`

ALTER TABLE `contacts`

ADD PRIMARY KEY (`id`);

-- AUTO_INCREMENT for dumped tables

-- AUTO_INCREMENT for table `contacts`

ALTER TABLE `contacts`

MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;

COMMIT;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;

/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;

/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

index.php

<?php

// Connect to the database

require_once "connection.php";

// Delete Table data

if (isset($_GET["del"])) {

$id = preg_replace('/\D/', '', $_GET["del"]); //Accept numbers only

if ($stmt = $con->prepare("DELETE FROM `contacts` WHERE `id`=?")) {

$stmt->bind_param("i", $id);

$stmt->execute();

$stmt->close();

$msg = '<div class="msg msg-delete">Contact details deleted successfully.</div>';

} else {

die('prepare() failed: ' . htmlspecialchars($con->error));

}

// Display Table data

$tabledata = "";

$sqlsearch = "";

if (isset($_POST["btnSearch"])) {

$keywords = $con->real_escape_string($_POST["txtSearch"]);

$searchTerms = explode(' ', $keywords);

$searchTermBits = array();

foreach ($searchTerms as $key => &$term) {

$term = trim($term);

$searchTermBits[] = " `name` LIKE '%$term%' OR `email` LIKE '%$term%' OR `contact` LIKE '%$term%'";

}

$sqlsearch = " WHERE " . implode(' AND ', $searchTermBits);

}

if ($stmt = $con->prepare("SELECT * FROM `contacts` $sqlsearch")) {

$stmt->execute();

$result = $stmt->get_result();

if($result->num_rows > 0) {

while ($row = $result->fetch_assoc()) {

$tabledata .= '<tr>

<td>'.$row["email"].'</td>

<td>'.$row["contact"].'</td>

<td>

</td>

</tr>';

}

} else {

$tabledata= '<tr><td colspan="4" style="text-align: center; padding:30px 0;">Nothing to display</td></tr>';

}

$stmt->close();

} else {

die('prepare() failed: ' . htmlspecialchars($con->error));

}

// Close database connection

$con->close();

<!DOCTYPE html>

<head>

<title>Simple CRUD with Search in PHP and MySQL</title>

</head>

<body>

<?php if(isset($msg)){ echo $msg; }?>

<h1>Simple CRUD with Search in PHP and MySQL</h1>

<h2>» Jake R. Pomperada MAED-IT, MIT «</h2>

</div>

<a href="create.php" class="btnCreate" title="Create new contact">Create New Contact</a>

</div>

<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">

<input type="text" name="txtSearch" value="<?php if(isset($keywords)){ echo $keywords; }?>" title="Input keywords here" required>

<button type="submit" name="btnSearch" class="btnSearch" title="Search keywords">Search</button>

<a href="index.php" class="btnReset" title="Reset search">Reset</a>

</form>

</div>

<table>

<thead>

<tr>

<th>Email</th>

<th>Contact</th>

<th>Action</th>

</tr>

</thead>

<tbody>

<?php

echo $tabledata;

</tbody>

</table>

</div>

</main>

</body>

</html>

create.php

<?php

// Delete Table data

if (isset($_POST["btnSave"])) {

// Connect to the database

require_once "connection.php";

$name = $con->real_escape_string($_POST["txtName"]);

$email = $con->real_escape_string($_POST["txtEmail"]);

$contact = $con->real_escape_string($_POST["txtContact"]);

if ($stmt = $con->prepare("INSERT INTO `contacts`(`name`, `email`, `contact`) VALUES (?, ?, ?)")) {

$stmt->bind_param("sss", $name, $email, $contact);

$stmt->execute();

$stmt->close();

$msg = '<div class="msg msg-create">Contact details saved successfully.</div>';

} else {

$msg = '<div class="msg">Prepare() failed: '.htmlspecialchars($con->error).'</div>';

}

// Close database connection

$con->close();

}

<!DOCTYPE html>

<head>

<title>Create Data | Simple CRUD with Search in PHP and MySQL </title>

</head>

<body>

<?php if(isset($msg)){ echo $msg; }?>

<h1>Simple CRUD with Search in PHP and MySQL</h1>

<h2>» Jake R. Pomperada MAED-IT, MIT «</h2>

</div>

<h2>Create New Contact</h2>

<hr>

</div>

<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post" class="frmCreate">

</div>

</form>

</div>

</main>

</body>

</html>

update.php

<?php

// Connect to the database

require_once "connection.php";

// Get contact details

if (isset($_GET["id"])) {

$id = preg_replace('/\D/', '', $_GET["id"]); //Accept numbers only

} else {

header("Location: index.php?p=update&err=no_id");

}

// Update contact details

if (isset($_POST["btnUpdate"])) {

$name = $con->real_escape_string($_POST["txtName"]);

$email = $con->real_escape_string($_POST["txtEmail"]);

$contact = $con->real_escape_string($_POST["txtContact"]);

if ($stmt = $con->prepare("UPDATE `contacts` SET `name`=?, `email`=?, `contact`=? WHERE `id`=?")) {

$stmt->bind_param("sssi", $name, $email, $contact, $id);

$stmt->execute();

$stmt->close();

$msg = '<div class="msg msg-update">Contact details updated successfully.</div>';

} else {

$msg = '<div class="msg">Prepare() failed: '.htmlspecialchars($con->error).'</div>';

}

if ($stmt = $con->prepare("SELECT `name`, `email`, `contact` FROM `contacts` WHERE `id`=? LIMIT 1")) {

$stmt->bind_param("i", $id);

$stmt->execute();

$stmt->bind_result($name, $email, $contact);

$stmt->fetch();

$stmt->free_result();

$stmt->close();

} else {

die('prepare() failed: ' . htmlspecialchars($con->error));

}

// Close database connection

$con->close();

<!DOCTYPE html>

<head>

<title>Update Data | Simple CRUD with Search in PHP and MySQL</title>

</head>

<body>

<?php if(isset($msg)){ echo $msg; }?>

<h1>Simple CRUD with Search in PHP</h1>

<h2>» Jake R. Pomperada MAED-IT, MIT «</h2>

</div>

<h2>Update Contact</h2>

<hr>

</div>

<form action="<?=$_SERVER['PHP_SELF']."?id=".$id;?>" method="post" class="frmUpdate">

<input type="text" name="txtName" placeholder="Name" value="<?php echo $name; ?>" required>

<input type="email" name="txtEmail" placeholder="Email" value="<?php echo $email; ?>" required>

<input type="number" min="0" name="txtContact" placeholder="Contact Number" value="<?php echo $contact; ?>" required>

<button type="submit" name="btnUpdate" class="btnUpdate" title="Update contact details">Update</button>

</div>

</form>

</div>

</main>

</body>

</html>

style.css

* {

margin: 0;

padding: 0;

box-sizing: border-box

}

body,

html {

height: 100%;

font-family: sans-serif;

}

body {

background:#13141c;

color: rgba(255, 255, 255, 0.9);

}

main {

padding: 50px 15px;

}

.wrapper {

display: block;

padding-top: 50px;

text-align: center;

min-width: 600px;

}

h1 {

margin-bottom: 10px;

}

h3 {

margin-bottom: 10px;

}

form {

display: flex;

justify-content: center;

box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);

}

.title {

display: block;

margin-bottom: 20px;

}

.title h2,

.title hr {

width: 500px;

}

.title h2 {

display: inline-block;

text-align: left;

}

.title hr {

display: block;

margin: 5px auto;

}

.create hr {

border: 1px solid #1BA345;

}

.update hr {

border: 1px solid #FEC001;

}

table {

border-collapse: collapse;

background-color: #ffffff;

color: #333;

box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);

font-size: 15px;

font-family: sans-serif;

margin: 0 auto;

min-width: 600px;

}

table th,

table td {

padding: 15px 25px;

text-align: center;

}

thead tr {

background-color: #2196f3;

}

thead th {

font-size: 18px;

color: #ffffff;

text-transform: uppercase;

}

tbody tr {

border-bottom: 1px solid #dddddd;

}

tbody tr:nth-of-type(odd) {

background-color: #ffffff;

}

tbody tr:nth-of-type(even) {

background-color: #f3f3f3;

}

tbody tr:hover {

color: #2196f3;

}

input {

display: block;

width: 360px;

background: #fff;

color: #000;

box-shadow: 0 6px 10px 0 rgba(0, 0, 0, 0.1);

border: 0;

outline: 0;

padding: 15px 25px;

font-size: 18px;

}

.btnReset,

button {

display: block;

background: #2196f3;

color: #fff;

border: 0;

outline: 0;

padding: 0;

cursor: pointer;

padding: 15px 30px;

font-size: 18px;

text-decoration: none;

text-shadow: 0 0 10px rgba(0, 0, 0, 0.2);

}

.btnSearch,

.btnReset {

width: 120px;

}

.btnReset {

background: #FEC001;

}

.btnCreate,

.btnUpdate,

.btnWrapper a,

.btnAction,

.btnAction.btnUpdate {

display: inline-block;

padding: 5px 8px;

border: none;

border-radius: 2px;

color: #ffffff;

text-shadow: 0 0 10px rgba(0, 0, 0, 0.4);

text-decoration: none;

font-size: 18px;

}

.btnWrapper a,

.btnCreate,

.btnUpdate {

padding: 15px 30px;

background: #1BA345;

}

.btnAction.btnUpdate {

margin-right: 5px;

background: #FEC001;

}

.btnDelete {

background: #DE3E44;

}

.btnWrapper a {

background: #dddddd;

color: #13141c;

}

.frmCreate,

.frmUpdate {

display: inline-block;

margin: 0 auto 20px;

}

.frmCreate input,

.frmUpdate input {

display: block;

width: 500px;

margin-bottom: 10px;

}

.frmCreate button,

.frmUpdate button {

display: block;

color: #fefefe;

}

.frmCreate button {

background: #1BA345;

}

.frmUpdate button {

background: #FEC001;

}

.btnWrapper {

display: block;

text-align: left;

}

.btnWrapper button,

.btnWrapper a {

display: inline-block;

border-radius: 0;

}

.btnWrapper button:hover,

.btnWrapper a:hover {

opacity: 0.9;

}

.msg {

position: absolute;

top: -60px;

left: calc(50% - 200px);

padding: 20px;

color: #fefefe;

text-shadow: 0 0 10px rgba(0, 0, 0, 0.2);

z-index: 9999;

width: 400px;

text-align: center;

animation: hideDiv 2.5s ease;

}

@keyframes hideDiv {

0% { top: -60px; }

10% { top: 20px; }

90% { top: 20px; }

100% { top: -60px; }

}

.msg-create {

background: #1BA345;

}

.msg-update {

background: #FEC001;

}

.msg-delete {

background: #DE3E44;

}

DOWNLOAD THE FREE AND COMPLETE SOURCE CODE HERE

Program Listing

index.php

<?php

$servername = "localhost";

$database = "crude";

$username = "root";

$password = "";

// Create connection

$conn = mysqli_connect($servername, $username, $password, $database);

// Check connection

if ($conn->connect_error) {

die("Connection failed: " . $conn->connect_error);

}

echo "Connected successfully to the database.";

mysqli_close($conn);

Program Listing

# Mr. Jake Rodriguez Pomperada, MAED-IT, MIT
# www.jakerpomperada.com www.jakerpomperada.blogspot.com
# jakerpomperada@gmail.com
# February 23, 2021
# Bacolod City, Negros Occidental

print()
print("\tPaper,Scissors, and Rocks Game in Python");
print()
p1 = str(input("Player1: "))
p2 = str(input("Player2: "))

if (p1.lower()  =='p') and (p2.lower() =='r'):
    print("Player 1 wins! Paper covers rock!")
elif (p2.lower() == 'p') and (p1.lower() == 'r'):
    print("Player 2 wins! Paper covers rock!")

elif  (p1.lower() == 's') and (p2.lower() == 'p'):
    print("Player 1 wins! Scissors cuts paper!")
elif (p2.lower() == 's') and (p1.lower() == 'p'):
    print("Player 2 wins! Scissors cuts paper!")

elif (p1.lower()=='r') and (p2.lower()=='s'):
    print("Player 1 wins!. Rock breaks scissors")
elif (p2.lower()=='r') and (p1.lower()=='s'):
    print("Player 2 wins!. Rock breaks scissors")

elif (p1.lower()=='p') and ( p2.lower()=='p'):
    print("Draw!")
elif (p1.lower()=='r') and (p2.lower()=='r'):
    print("Draw!")
elif (p1.lower() == 's') and (p2.lower() == 's'):
    print("Draw!")

else:
    if (p1.lower()!= 'p' or p1.lower() !='r'  or p1.lower()!='s') \
       and ( p2.lower()=='p'  or p2.lower() == 'r' or p2.lower()=='s'):
          print(f"Player 1 entered an invalid value \"{p1}\" ")
    elif (p2.lower()!= 'p'  or p2.lower()!='r'  or p2.lower() !='s') \
       and (p1.lower()=='p' or p1.lower() == 'r' or p1.lower() =='s'):
          print(f"Player 2 entered an invalid value \"{p2}\" ")
    else:
        print(f"Player 1 entered an invalid value \"{p1}\" ")
        print(f"Player 2 entered an invalid value \"{p2}\" ")

print()
print("\tEND OF PROGRAM");
print()

How to Use Error Reporting in PHP

How to use Error_Reporting in PHP

In this tutorial I will teach you how to use error_reporting in PHP programming language.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com

Program Listing

index.php

<?php

error_reporting(0);

if( $_GET["name"] || $_GET["age"] || $_GET["email"] ) {

echo "Welcome ". $_GET['name']. "<br />";

echo "You are ". $_GET['age']. " years old."."<br />";;

echo "Your email is ". $_GET['email'];

exit();

}

<html>

<body>

Name: <input type = "text" name = "name" />

Age: <input type = "text" name = "age" />

Email: <input type = "text" name = "email" />

</form>

</body>

</html>

Free Programming Source Codes and Computer Programming Tutorials

Monday, April 5, 2021

Decimal To Roman Numeral in C++

Password in C++

Saturday, April 3, 2021

Java Programming Language (Tagalog)

Count Number of Words From a Text File in Python

Positive Mindset Sa Buhay

Factorial Using Functions in Go

Two Dimensional Arrays in Go

Factorial Using Functions in Go

Two Dimensional Arrays in Go

Friday, April 2, 2021

Simple CRUD With Search in PHP and MySQL (Tagalog)

Simple CRUD with Search in PHP and MySQL

Thursday, April 1, 2021

My First Live Stream

Bayabas Herbal Na Gamot

How To Connect To Database in PHP and MySQL

How to connect to database in PHP and MySQL

Hindi Natutulog ang Diyos

Paper, Scissors, and Rocks Game in Python

Paper,Scissors, and Rocks Game in Python

How to Use Error Reporting in PHP

How to use Error_Reporting in PHP

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