Free Programming Source Codes and Computer Programming Tutorials

Monday, May 18, 2020

Leap Year Checker Using OOP in Java

I wrote this program to accept the user input a year and then the program will check if the given year is a leap year or not using object-oriented programming in Java.

My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.My mobile number here in the Philippines is 09173084360. My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675.

Here in Bacolod City, Negros Occidental I also accepting computer repair, web development using WordPress, Computer Networking, and Arduino Project development at a very affordable price. My personal website is http://www.jakerpomperada.com

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

package oop_java;

import java.util.Scanner;

/**

* NetBeans IDE 8.2

* @author Mr. Jake R. Pomperada

* March 22, 2018 Thursday

* Bacolod City, Negros Occidental

public class LeapYear {

public int year;

public boolean leap = false;

public String result;

public void getdata() {

Scanner input = new Scanner(System.in);

System.out.println();

System.out.println(" Leap Year Checker Using OOP");

System.out.println();

System.out.print("Enter Year : ");

year = input.nextInt();

}

public void checkyear() {

if(year % 4 == 0)

{

if( year % 100 == 0)

{

// year is divisible by 400, hence the year is a leap year

if ( year % 400 == 0)

leap = true;

else

leap = false;

}

else

leap = true;

}

else

leap = false;

if(leap)

result = year + " is a leap year.";

else

result = year + " is not a leap year.";

}

public void display() {

System.out.println();

System.out.println("===== DISPLAY RESULT =====");

System.out.println();

System.out.println(result);

System.out.println();

}

public static void main(String args[]) {

LeapYear year = new LeapYear();

year.getdata();

year.checkyear();

year.display();

}

Fahrenheit To Celsius Converter in jQuery

I wrote this program to ask the user to give temperature in Fahrenheit and the program will convert the given temperature into Celsius equivalent using jQuery.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

<html>

<head>

<title>Fahrenheit To Celsius Converter in jQuery</title>

<style>

body {

background-color:white;

font-family: arial;

font-size:15px;

font-weight:bold;

}

.input_bold {

font-weight: bold;

font-size:15px;

color:blue;

}

.input_bold2 {

font-weight: bold;

font-size:15px;

color:black;

}

.left {

width: 20%;

float: left;

text-align: right;

}

.right {

width: 20%;

margin-left: 20px;

float:left;

}

.header {

width: 37%;

float: left;

text-align: right;

}

h4 {

text-align: center;

}

</style>

/* solve button */

$(document).ready(function() {

$("#fahrenheit").on("keydown keyup", function() {

var fah = $("#fahrenheit").val();

celsius = (fah-32) * 5 / 9;

$("#results").val(celsius.toFixed(2) +" "+ String.fromCharCode(176) + "C");

});

/* clear button */

$("#clear").click(function(){

$("#fahrenheit").val('');

$("#results").val('');

$("#fahrenheit").focus();

});

</script>

</head>

<body>

<form>

<h3>Fahrenheit To Celsius Converter in jQuery</h3>

</div>

Temperature in Fahrenheit

</div>

</div>

Celsius Equivalent

</div>

</div>

Clear </button>

<br>

</div>

</form>

</body>

</html>

Sunday, May 17, 2020

Word Count in a Sentence in jQuery

I wrote this program using jQuery to count the number of words in a given sentence.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

<html>

<head>

<title>Word Count in a Sentence in jQuery</title>

</head>

</script>

<body>

function WordCount(str) {

return str.split(" ").length;

}

$(document).ready(function() {

var sentence = "jQuery programming is fun.";

document.write("<h2>Word Count in a Sentence in jQuery</h2>");

document.write("<h3>Sentence : " ,sentence,"</h3>");

count_words = WordCount(sentence);

document.write("<h3>Total Number of Words : " ,count_words,"</h3>");

});

</script>

</body>

</html>

Count Vowels and Consonants in jQuery

I wrote this program to count the number of vowels and consonants in a given string using jQuery.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

<html>

<head>

<title>Count Vowels and Consonants in jQuery</title>

</head>

</script>

<body>

function vowel_count(str)

{

var vowel_list = 'aeiou';

var vowel_count = 0;

str_lower = str.toLowerCase();

for (var x=0; x<str_lower.length; x++)

{

if (vowel_list.indexOf(str_lower[x]) !== -1)

{

vowel_count++;

}

return vowel_count;

}

function consonant_count(str)

{

var consonant_list = 'bcdfghjklmnpqrstvwxyz';

var consonant_count = 0;

str_lower = str.toLowerCase();

for (var x=0; x<str_lower.length; x++)

{

if (consonant_list.indexOf(str_lower[x]) !== -1)

{

consonant_count++;

}

return consonant_count;

}

$(document).ready(function() {

var str = "Northern Negros State College of Science and Technology";

var result;

document.write("<h2>Count Vowels and Consonants in jQuery</h2>");

document.write("<h2>Given Text : " ,str,"</h2>");

display_vowels = vowel_count(str);

display_consonants = consonant_count(str);

document.write("<h2> Number of Vowels : " ,display_vowels,"</h2>");

document.write("<h2> Number of Consonants : " ,display_consonants,"</h2>");

});

</script>

</body>

</html>

Saturday, May 16, 2020

Classes in Modern C++

A simple implementation of classes in modern C++.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

#include <iostream>
#include <string>

using namespace std;

class Course
{
public:
  void viewCourse();
  void modifyCourse(string newCourse);
  bool removeCourse();
  bool createCourse();
private:
  string courseName = "no course";
  int courseId = 0;
};

void Course::viewCourse()
{
  cout << "Course: " << courseName << " id: " << courseId << '\n';
}

void Course::modifyCourse(string newCourse)
{
  courseName = newCourse;
}

bool Course::removeCourse()
{
  courseName = "no course";
  courseId = 0;

  return true;
}

bool Course::createCourse()
{
  // no idea what to do here
  return true;
}



int main()
{
    Course course1, course2;

    cout << "testing initial classes:\n";
    course1.viewCourse();
    course2.viewCourse();
    cout << "modifying the courses:\n";
    course1.modifyCourse("Math");
    course2.modifyCourse("C++");
    cout << "displaying the modified courses:\n";
    course1.viewCourse();
    course2.viewCourse();
    cout << "removing the courses:\n";
    course1.removeCourse();
    course2.removeCourse();
    cout << "displaying the modified(removed) courses:\n";
    course1.viewCourse();
    course2.viewCourse();

}

Array using Modern C++

A simple program that uses the Array and modern C++ approach.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

#include <iostream>

#include <array>

using namespace std;

constexpr int MAX = 5;

int main()

{

array<int, MAX> arr = {10 ,20, 30, 40, 50};

array<int*, MAX> ptr;

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

ptr[i] = &arr.at(i);

// the advantage of using at() over [] is that it throws

// an exception which is easier to debug than undefined behaviour

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

cout << "Value of var[" << i << "] = " << *ptr.at(i) << '\n';

}

Radix Sort in C

A simple program that I wrote using C programming to demonstrate Radix Sort Algorithm.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

# include<stdio.h>

#include <math.h>

#define max 20

int main()

{

int arr[max],k,e,len,i,j,digit,x,numbdig;

int temp[10][max];

printf("Radix Sort in C");

printf("How many numbers to sort ? ");

scanf("%d",&len);

printf("How many number of digits in each numerical ? ");

scanf("%d",&numbdig);

printf("Enter %d values\n", len);

for(i=0;i<len;i++)

scanf("%d",&arr[i]);

for(i=0;i<10;i++)

{

for(j=0;j<max;j++)

{

temp[i][j]=-1;

}

for(k=1;k<=numbdig;k++)

{

e=pow(10,k-1);

for(i=0;i<len;i++)

{

digit=(arr[i]/e)%10;

x=0;

while(temp[digit][x]!=-1)x++;

temp[digit][x]=arr[i];

}

x=0;

for(i=0;i<10;i++)

{

for(j=0;j<max;j++)

{

if (temp[i][j]!=-1)

{

arr[x]=temp[i][j];

x++;

}

printf("\nThe output of pass %d is \n",k);

for(i=0;i<len;i++)printf("%d\t",arr[i]);

printf("\n");

for(i=0;i<10;i++)

{

for(j=0;j<max;j++)

{

temp[i][j]=-1;

}

return 0;

}

Friday, May 15, 2020

Frozen Pizzas Challenge Quad Cities-Style Pickle Pizza via GoldBelly!!

Upper Case String in jQuery

Digital Clock in JavaScript

A simple program was written by my good friend and fellow software engineer Sir Ernel he called his program digital clock in JavaScript.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

<!DOCTYPE html> <html> <head> <title>Page Title</title> <script type="text/javascript"> function setDeg(){ var date= new Date(); var hours = ( date.getHours() + date.getMinutes()/60) / 12 * 360; var mins = date.getMinutes() / 60 * 360; var secs = ( date.getSeconds() + date.getMilliseconds()/1000) /60 * 360; document.getElementById('hour').style.transform = 'rotate('+hours+'deg)'; document.getElementById('min').style.transform = 'rotate('+mins+'deg)'; document.getElementById('sec').style.transform = 'rotate('+secs+'deg)'; } setInterval(setDeg,1); </script> <style > #cont{ height:270px; width:270px; border-radius:50%; background-color:#000; position:absolute; overflow:hidden; left:0;right:0;top:0;bottom:0; margin:auto; box-shadow:0 0 9px 5px red; } #hour{ height:60px; width:5px; background-color:white; position:absolute ; top:-60px; left:0; right:0; bottom:0; margin:auto; transform:rotate(90deg); transform-origin: bottom; box-shadow:0 0 9px 5px orange; border-radius:30%; } #min{ height:80px; width:5px; background-color:white; position:absolute ; top:-80px; left:0; right:0; bottom:0; margin:auto; transform:rotate(0deg); transform-origin: bottom; box-shadow:0 0 9px 5px orange; border-radius:30%; opacity:1; } #sec{ height:110px; width:5px; background-color:white; position:absolute ; top:-110px; left:0; right:0; bottom:0; margin:auto; transform:rotate(-45deg); box-shadow:0 0 9px 5px orange; transform-origin:bottom; border-radius:30%; } #cir{ height:15px; width:15px; position:absolute; top:0; left:0; right:0; bottom:0; margin:auto; background-color:white; box-shadow:0 0 9px 5px deeppink; border-radius:50%; opacity:1; } h{ position:absolute ; height:20px; width:5px; margin:auto; background:white; box-shadow:0 0 9px 5px deeppink; } #twelve{ right:0; left:0; top:0; } #six{ right:0; left:0; bottom:0; } #nine{ top:0; bottom:0; left:0; height:5px; width:20px; } #three{ top:0; bottom:0; right:0; height:5px; width:20px; } </head> </style> <body bgcolor="yellow"> <div id="cont"> <h id="twelve"></h> <h id="six"></h> <h id="nine"></h> <h id="three"></h> <div id="hour"></div> <div id="min"></div> <div id="sec"></div> <div id="cir"></div> </div> </body> </html>

Multiplication Row in C

A program written by my good friend and fellow software engineer Sir Ernel thank you sir for sharing your code to us.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

int main() { int i,j,rows; printf("Enter number of rows:\n"); scanf("%d",&rows); for(i=1;i<=rows;i++) { for(j=1;j<=i;j++) { printf("%2d ",i*j); } printf("\n"); } }

Number Name in C

A number name program in C written by my good friend Sir Ernel thank you sir for sharing your code to us.

My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.My mobile number here in the Philippines is 09173084360.My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

#include<stdio.h> main() { int i,j,k=0,value,count,a[10],dummy,num,l; char *ones[]={"zero","one","two","three","four","five","six","seven","eight","nine"}; char *temp[]={"ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen"}; char *tens[]={"-","-","twenty","thirty","forty","fifty","sixty","seventy","eighty","ninety"}; //hundreds are same as ones printf("Enter a Number till what you what numbers in words but max is 6 digits\n"); scanf("%d",&num); for(l=1;l<=num;l++) { int j,k=0,value,count,a[10]; value=l; while(value>0) { i=value%10; a[k]=i; k++; value/=10; } //Here if 12345 is given then a[0]=5,a[1]=4 and soon then last but one digit will be at a[1] int totalDigits=k-1; if(totalDigits<6) { for(i=totalDigits;i>=0;i--) { if(i==5 && a[i]!=0) { printf("%s lakh ",ones[a[i]]); } if(i==4 || i==3) { //Start if(i==4 && a[i]==0) { printf("%s thousand ",ones[a[i-1]]); i--; } else if(i==4 && a[i]==1) { printf("%s thousand ",temp[a[i-1]]); i--; } else if(i==4) { printf("%s ",tens[a[i]]); } else { printf("%s thousand ",ones[a[i]]); } //end } if(i==2 && a[i]!=0) { printf("%s hundred and ",ones[a[i]]); } if(i==2 && a[i]==0) { printf("and "); } if(i==1 || i==0) { if(i==1 && a[i]==0) { printf("%s ",ones[a[i-1]]); i--; break; } if(i==1 && a[i]==1) { printf("%s ",temp[a[i-1]]); i--; break; } if(i==1 && a[i]!=1 && a[i]!=0) { printf("%s ",tens[a[i]]); } if(i==0 && a[i]!=0) { printf("%s ",ones[a[i]]); } } } } else { printf("Enter only upto 6 digits\n"); break; } printf("\n"); } }

Upper Case String in jQuery

I wrote this simple program using jQuery to convert the lowercase string into uppercase format.

My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.My mobile number here in the Philippines is 09173084360.My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675.

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

<html>

<head>

<title>Upper Case String in jQuery</title>

</head>

</script>

<body>

$(document).ready(function() {

var str_title = "programming is fun";

var str_display;

document.write("<h2>Original Text : " ,str_title,"</h2>");

str_upper_case = str_title.toUpperCase();

document.write("<h2> Upper Case Text : " ,str_upper_case,"</h2>");

});

</script>

</body>

</html>

Reverse a String in jQuery

I wrote this program to reverse the given string using jQuery. The code is very easy to understand and use.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675. Here in Bacolod City, Negros Occidental I also accepting computer repair, web development using WordPress, Computer Networking, and Arduino Project development at a very affordable price.

My personal website is http://www.jakerpomperada.com

My programming website is http://www.jakerpomperada.blogspot.comI am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

<html>

<head>

<title>Reverse a String in jQuery</title>

</head>

</script>

<body>

$(document).ready(function() {

var str = "Computer Science";

document.write("<h2>Reverse a String in jQuery</h2>");

document.write("<h3>Original Text : " ,str,"</h3>");

const reverse_str = str.split('').reverse().join('');

document.write("<h3>Reverse String : " ,reverse_str,"</h3>");

});

</script>

</body>

</html>

Remove Vowels in a String in jQuery

I wrote this simple program to remove the vowels in a given string in jQuery.

My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675.

Here in Bacolod City, Negros Occidental I also accepting computer repair, web development using WordPress, Computer Networking, and Arduino Project development at a very affordable price.

My personal website is http://www.jakerpomperada.com

My programming website is http://www.jakerpomperada.blogspot.com

I am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Program Listing

<html>

<head>

<title>Remove Vowels in a String in jQuery</title>

</head>

</script>

<body>

function Remove_Vowels(str) {

return str.replace(/[aeiouAEIOU]/gi,' ');

}

$(document).ready(function() {

var string_given = "Web Development Using jQuery";

document.write("<h2>Remove Vowels in a String in jQuery</h2>");

document.write("<h3>Original String : " ,string_given,"</h3>");

display_results = Remove_Vowels(string_given);

document.write("<h3>The Result : " ,display_results,"</h3>");

});

</script>

</body>

</html>

Lower Case in String Using jQuery

I wrote this simple program using jQuery to convert the given string into the lower case format.

My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675.

Here in Bacolod City, Negros Occidental I also accepting computer repair, web development using WordPress, Computer Networking, and Arduino Project development at a very affordable price.

My personal website is http://www.jakerpomperada.com

My programming website is http://www.jakerpomperada.blogspot.com

I am also a book author you can purchase my books on computer programming and information technology in the following links below.

ttps://www.unlimitedbooksph.com/

Program Listing

<html>

<head>

<title>Lower Case String in jQuery</title>

</head>

</script>

<body>

$(document).ready(function() {

var str_title = "TECHNOLOGY IS CHANGING FAST.";

var str_display;

document.write("<h2>Lower Case in jQuery</h2>");

document.write("<h2>Original Text : " ,str_title,"</h2>");

str_lower_case = str_title.toLowerCase();

document.write("<h2> Lower Case Text : " ,str_lower_case,"</h2>");

});

</script>

</body>

</html>

Fahrenheit To Celsius Converter in VB.NET

I wrote this simple program using visual basic .net to ask the user to give temperature in Fahrenheit and then it will be converted into celsius equivalent.

I am currently accepting programming work inventory system, enrollment system, accounting system, payroll system, information system, website design and development using WordPress, IT projects, school and application development, programming projects, thesis, and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me in 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 the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675.

Here in Bacolod City, Negros Occidental I also accepting computer repair, web development using WordPress, Computer Networking, and Arduino Project development at a very affordable price.

My personal website is http://www.jakerpomperada.com

My programming website is http://www.jakerpomperada.blogspot.com

I am also a book author you can purchase my books on computer programming and information technology in the following links below.

https://www.unlimitedbooksph.com/

Sample Program Output

Program Listing

Public Class Form1

Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim convert_fahrenheit As Double

convert_fahrenheit = (9 / 5) * (Val(txtCelsius.Text) + 32)

txtfahrenheit.Text = Str(convert_fahrenheit)

End Sub

End Class

Free Programming Source Codes and Computer Programming Tutorials

Monday, May 18, 2020

Leap Year Checker Using OOP in Java

Fahrenheit To Celsius Converter in jQuery

Fahrenheit To Celsius Converter in jQuery

Sunday, May 17, 2020

Word Count in a Sentence in jQuery

Count Vowels and Consonants in jQuery

Saturday, May 16, 2020

Classes in Modern C++

Array using Modern C++

Radix Sort in C

Friday, May 15, 2020

Frozen Pizzas Challenge Quad Cities-Style Pickle Pizza via GoldBelly!!

Upper Case String in jQuery

Digital Clock in JavaScript

Multiplication Row in C

Number Name in C

Upper Case String in jQuery

Reverse a String in jQuery

Reverse a String in jQuery

Remove Vowels in a String in jQuery

Lower Case in String Using jQuery

Lower Case in String Using jQuery

Fahrenheit To Celsius Converter in VB.NET

Sample Program Output

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