Free Programming Source Codes and Computer Programming Tutorials

Sunday, June 28, 2020

Difference of Two Numbers Using VB.NET

I wrote this program to ask the user to give two numbers and then the program will compute the difference between the two numbers and display the result on the screen using VB.NET

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.comMy 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

Public Class Form1

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Dim a As Integer

Dim b As Integer

Dim difference As Integer

a = Val(TextBox1.Text)

b = Val(TextBox2.Text)

' compute the difference between variable a and variable b

difference = (a - b)

TextBox3.Text = difference

End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

TextBox1.Text = ""

TextBox2.Text = ""

TextBox3.Text = ""

TextBox1.Focus()

End Sub

Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click

End

End Sub

End Class

Remove Selected Pages Numbers in Microsoft Word

Wednesday, June 24, 2020

Gets Statement in C

A simple program that I wrote to show how to use gets statement using C programming language.

Program Listing

#include <stdio.h>

int main()

{

char name[100];

printf("\n\n");

printf("\tWhat is your name? ");

gets(name); /* read string using gets statement */

printf("\n\n");

printf("\tHi %s. How are you today? ",name);

printf("\n\n");

printf("\t");

puts(name); /* display string using puts statement*/

printf("\n\n");

printf("\tEnd of Program");

printf("\n\n");

}

Passing a String in a Function in C

I wrote this program to demonstrate how to pass a string in a function in C programming language.

Program Listing

#include <stdio.h>

void displayString(char str[]);

int main()

{

char str[50];

printf("\n\n");

printf("\tGive me your name? ");

gets(str);

displayString(str); // Passing string to a function.

printf("\n\n");

printf("\tEnd of Program");

printf("\n\n");

}

void displayString(char str[])

{

printf("\n\n");

printf("\tYour name is ");

puts(str);

}

String Copy in C

An example of a string copy program that I wrote using C programming language.

Program Listing

#include <stdio.h>

int main () {

char str1[10] = "Jake";

char str2[10] = "Pomperada";

char str3[10];

int len ;

// copy str1 into str3

strcpy( str3, str1);

printf("\n\n");

printf("\tstrcpy(str3, str1) : %s ",str3);

printf("\n");

// concatenates str1 and str2

strcat( str1, str2);

printf("\tstrcat( str1, str2): %s ",str1);

// total lenghth of str1 after concatenation

len = strlen(str1);

printf("\n");

printf("\tstrlen(str1) : %d ",len);

printf("\n\n");

printf("\t\tEnd of Program");

printf("\n\n");

}

Continue Statement in C

A program that I wrote to show how to use continue statement using C programming language.

Program Listing

#include <stdio.h>

int main()

{

int a = 1;

printf("\n\n");

printf("\tContinue Statement Demonstration");

do {

if (a==5) {

a+=1;

continue;

}

printf("\n\n");

printf("\tThe value of a: %d.",a);

a+=1;

} while (a <=10);

printf("\n\n");

printf("\tThank you for Using This Software.");

printf("\n\n");

printf("\tEnd of Program");

printf("\n\n");

}

Break Statement in C

A program that I wrote to show how to use break statement in C programming language.

Program Listing

/*break.c

Author : Mr. Jake R. Pomperada,BSCS,MAED-IT

Date : November 23, 2018 Tuesday 11:48 AM

Location : Bacolod City, Negros Occidental

Website : http://www.jakerpomperada.com

Emails : jakerpomperada@jakerpomperada.com

jakerpomperada@gmail.com

jakerpomperada@yahoo.com

jakerpomperada@aol.com

#include <stdio.h>

int main()

{

int a=0;

printf("\n\n");

printf("\tBreak Statement in C");

printf("\n\n");

for (a=1; a<=10; a++)

{

if (a==6) {

break;

}

printf("\t%4d",a);

}

printf("\n\n");

printf("\tThank you for Using This Software.");

printf("\n\n");

printf("\tEnd of Program");

printf("\n\n");

}

Logical Operators in C

A program that demonstrates how to use logical operators using C programming languages.

Program Listing

/* logical.c

Author : Jake Rodriguez Pomperada,BSCS,MAED-IT

Date : November 19, 2018 Monday 2:18 PM

Location : Bacolod City, Negros Occidental

Website : http://www.jakerpomperada.com

Emails : jakerpomperada@jakerpomperada.com

jakerpomperada@gmail.com

jakerpomperada@yahoo.com

jakerpomperada@aol.com

#include <stdio.h>

int main()

{

int a=10, b=4, c=10, d=20;

// logical AND example

printf("\n\n");

printf("\tLogical Operators Demonstration");

printf("\n\n");

if (a>b && c==d) {

printf("\n");

printf("\tA is greater than B AND C is equal to D.\n");

}

else {

printf("\n");

printf("\tAND condition not satisfied.\n");

}

// logical OR example

if (a>b || c==d) {

printf("\n");

printf("\tA is greater than B OR C is equal to D.\n");

}

else

{

printf("\n");

printf("\tNeither A is greater than B nor C is equal to D.\n");

}

// logical NOT example

if (!a) {

printf("\n");

printf("\tA is zero.\n");

}

else {

printf("\n");

printf("\tA is not zero.");

}

printf("\n\n");

printf("\tEnd of Program");

printf("\n\n");

}

Monday, June 22, 2020

Product of Two Numbers in VB.NET

A simple program that I wrote using Visual Basic NET to ask the user to give two numbers and then the program will compute the product of two numbers and display the results on the screen.

Sample Program Output

Program Listing

Public Class Form1

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Dim a, b, product As Integer

If TextBox1.Text = "" Then

MsgBox("Cannot Be Empty. Try Again")

TextBox1.Focus()

TextBox3.Text = ""

ElseIf TextBox2.Text = "" Then

MsgBox("Cannot Be Empty. Try Again")

TextBox2.Focus()

TextBox3.Text = ""

Else

a = Val(TextBox1.Text)

b = Val(TextBox2.Text)

product = (a * b)

TextBox3.Text = product

End If

End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

TextBox1.Text = ""

TextBox2.Text = ""

TextBox3.Text = ""

TextBox1.Focus()

End Sub

Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click

End

End Sub

End Class

Interest Rate Solver in PHP

I wrote this interest rate solver using PHP programming language.

Sample Program Output

Program Listing

index.php

<!doctype html>

<html>

<head>

<title>Interest Rate Solver in PHP</title>

</head>

body {

font-family : arial;

};

</style>

<body>

<h2>Interest Rate Solver in PHP</h2>

<?php

$amount=$interest_rate=$period=NULL;

$total_interest=$total_payable=$monthly_payable=0;

if(isset($_POST['compute'])){

$amount=$_POST['amount'];

$interest_rate=$_POST['interest_rate'];

$period=$_POST['period'];

$total_interest=$amount*($interest_rate/100)*$period;

$total_payable=$total_interest+$amount;

$monthly_payable=$total_payable/$period;

}

<p>Amount Needed: <input type="text" name="amount" size="8" value="<?=$amount;?>"/></p>

<p>Interest Rate: <input type="text" name="interest_rate" size="8" value="<?=$interest_rate;?>"/></p>

<p>Payment Period: <input type="text" name="period" size="8" value="<?=$period;?>"/></p>

<p>

Loan Amount: <?=number_format($amount, 2);?><br/>

Total Interest: <?=number_format($total_interest, 2);?><br/>

Total Payable: <?=number_format($total_payable, 2);?><br/>

Monthly Payable: <?=number_format($monthly_payable, 2);?>

</p>

</form>

</body>

</html>

Celsius To Fahrenheit in VB.NET

A simple program that I wrote using Visual Basic .NET to ask the user to give temperature value in Celsius and then our program will convert the given Celsius temperature into Fahrenheit equivalent.

Program Listing

Public Class Form1

Dim celsius As Integer

Dim fahrenheit As Double

Dim solve_fahrenhiet As Double

Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click

MsgBox("This program written By Jake Rodriguez Pomperada", vbInformation, "About This Program")

End Sub

Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click

End

End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

TxtCelsius.Text = ""

TxtFahrenheit.Text = ""

TxtCelsius.Focus()

End Sub

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

celsius = Val(TxtCelsius.Text)

fahrenheit = Val(TxtFahrenheit.Text)

solve_fahrenhiet = (9 / 5) * (celsius + 32)

TxtFahrenheit.Text = solve_fahrenhiet

End Sub

End Class

Calculator Program in PHP

I wrote this calculator program using PHP.

Program Listing

<!doctype html>

<html>

<head>

<title>Calculator Program in PHP</title>

</head>

body {

font-family : arial;

};

</style>

<body>

<h2>Calculator Program in PHP</h2>

<?php

$n1=$n2=$res=0;

if(isset($_POST['operation'])){

$n1=$_POST['n1'];

$n2=$_POST['n2'];

$operation=$_POST['operation'];

if($operation=="Add"){

$res=$n1+$n2;

}else if($operation=="Subtract"){

$res=$n1-$n2;

}else if($operation=="Multiply"){

$res=$n1*$n2;

}else{

$res=$n1/$n2;

}

<p>Value No. 1 <input type="text" name="n1" value="<?=$n1;?>" size="5"/></p>

<p>Value No. 2 <input type="text" name="n2" value="<?=$n2;?>" size="5"/></p>

<p>

</p>

<p>Result: <input type="text" name="res" value="<?=$res;?>" size="5"/></p>

</form>

</body>

</html>

Friday, June 19, 2020

Fahrenheit To Celsius in PHP

A program that will convert Fahrenheit temperature into Celsius temperature equivalent using PHP programming language

Program Listing

<?php

$cel=$fah=0;

if(isset($_POST['convert'])){

$fah=$_POST['fah'];

$cel=($fah-32)*5/9;

}

<!doctype html>

<html>

<head>

<title>Fahrenheit To Celsius in PHP</title>

</head>

<body>

<h2>Fahrenheit To Celsius in PHP</h2>

Fahrenheit: <input type="text" name="fah" value="<?=$fah;?>" size="5"/> =

<input type="text" name="cel" value="<?=$cel;?>" size="5"/> Celsius

</form>

</body>

</html>

Celsius To Fahrenheit in PHP

A Celsius To Fahrenheit temperature converter program written in PHP programming language.

Program Listing

<?php

$cel=$fah=0;

if(isset($_POST['convert'])){

$cel=$_POST['cel'];

$fah=$cel*9/5+32;

}

<!doctype html>

<html>

<head>

<title>Celsius To Fahrenheit in PHP</title>

</head>

<body>

<h2>Celsius To Fahrenheit in PHP</h2>

Celsius: <input type="text" name="cel" value="<?=$cel;?>" size="5"/> =

<input type="text" name="fah" value="<?=$fah;?>" size="5"/> Fahrenheit

</form>

</body>

</html>

Calculator Program in PHP

A calculator program is written in PHP programming language.

Program Listing

<!doctype html>

<html>

<head>

<title>Calculator in PHP</title>

</head>

<body>

<h2>Calculator in PHP</h2>

<?php

$n1=$n2=$res=0;

if(isset($_POST['operation'])){

$n1=$_POST['n1'];

$n2=$_POST['n2'];

$operation=$_POST['operation'];

if($operation=="Add"){

$res=$n1+$n2;

}elseif($operation=="Subtract"){

$res=$n1-$n2;

}elseif($operation=="Multiply"){

$res=$n1*$n2;

}else{

$res=$n1/$n2;

}

<p>

</p>

<p>Result: <input type="text" name="res" value="<?=$res;?>" size="5"/></p>

</form>

</body>

</html>

Thursday, June 18, 2020

Login Using Text File in C#

A program was written by my friend by Tom the shows how to create a login system using text file in C#.

DOWNLOAD THE COMPLETE SOURCE CODE HERE

Free Programming Source Codes and Computer Programming Tutorials

Sunday, June 28, 2020

Difference of Two Numbers Using VB.NET

Remove Selected Pages Numbers in Microsoft Word

Wednesday, June 24, 2020

Gets Statement in C

Passing a String in a Function in C

String Copy in C

Continue Statement in C

Break Statement in C

Logical Operators in C

Monday, June 22, 2020

Product of Two Numbers in VB.NET

Product of Two Numbers in VB.NET

Product of Two Numbers in VB.NET

Interest Rate Solver in PHP

Interest Rate Solver in PHP

Celsius To Fahrenheit in VB.NET

Calculator Program in PHP

Calculator Program in PHP

Friday, June 19, 2020

Fahrenheit To Celsius in PHP

Celsius To Fahrenheit in PHP

Calculator Program in PHP

Thursday, June 18, 2020

Login Using Text File in C#

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