Free Programming Source Codes and Computer Programming Tutorials

Sunday, April 9, 2023

String Palindrome Using Pointers in C

A program that will ask the user to give a string and then the program will check if the given string is a palindrome or not a palindrome using pointers in C programming language.

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Program Listing

#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main() {
   char str[100];
   char *begin_ptr, *end_ptr;
   int len, is_palindrome = 1;
   
     
   printf("\n\n");
   printf("\tString Palindrome Using Pointers in C\n\n");
   printf("\tEnter a string: ");
   gets(str);

   len = strlen(str);
   begin_ptr =  toupper(str);
   end_ptr = toupper(str) + len - 1;

   while (toupper(begin_ptr) < toupper(end_ptr)) {
      if (toupper(*begin_ptr) != toupper(*end_ptr)) {
         is_palindrome = 0;
         break;
      }
      begin_ptr++;
      end_ptr--;
   }
   
   printf("\n\n");
   if (is_palindrome)
      printf("\t%s is a palindrome.", str);
   else
      printf("\t%s is not a palindrome.", str);
   printf("\n\n");
   printf("\tEnd of Program\n\n");
   return 0;
}

Saturday, April 8, 2023

Display Odd numbers Using Arrays in Java

Display Odd numbers using arrays in Java

A program to display odd numbers from 1 to 10 using Arrays in Java programming language.

My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com.
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Program Listing
//display odd numbers using arrays in java

public class Main {
    public static void main(String[] args) {
        int[] numbers = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
        System.out.println("Odd numbers:");
        for (int i = 0; i < numbers.length; i++) {
            if (numbers[i] % 2 != 0) {
                System.out.println(numbers[i]);
            }
        }
    }
}

Friday, April 7, 2023

Even numbers 1 to 20 using list box in Microsoft Visual Basic 6

Even numbers 1 to 20 using list box in visual basic 6

A program that I wrote using Microsoft Visual Basic 6 to display the even numbers from 1 to 20 using list box.

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.
Please subscribe to my channel  https://www.youtube.com/channel/UCOs-lpOoIeJoh6gpJthPoGg
=================================================

You can buy my C++ book online at  

https://www.mindshaperspublishing.com/product/beginners-guide-to-c-programming/

You can buy my book in introduction to computer networking at 
https://www.unlimitedbooksph.com/product-page/introduction-to-computer-networking

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Program Listing

Private Sub Form_Load()
 Dim i As Integer
  
  'Loop through list box and add even numbers to new list box
  For i = 1 To 20
    If i Mod 2 = 0 Then 'Check if number is even
      List1.AddItem i
    End If
    Next
End Sub

Odd and Even Number Using Pointers in C

A program that will check if the number given is odd or even number using pointers in C programming language.

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.
Please subscribe to my channel  https://www.youtube.com/channel/UCOs-lpOoIeJoh6gpJthPoGg
=================================================

You can buy my C++ book online at  

https://www.mindshaperspublishing.com/product/beginners-guide-to-c-programming/

You can buy my book in introduction to computer networking at 
https://www.unlimitedbooksph.com/product-page/introduction-to-computer-networking

Want to support my channel?
GCash Account
Jake Pomperada

09173084360

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Thank you very much for your support.




Program Listing
#include <stdio.h>

void check_odd_even(int *num) {
    if ((*num) & 1) {
        printf("%d is odd\n", *num);
    } else {
        printf("%d is even\n", *num);
    }
}

int main() {
    int num = 11;
    int *ptr = &num;
    
    check_odd_even(ptr);
    return 0;
}

Thursday, April 6, 2023

Kilometers To Miles Using Pointers in C++

A program that will ask the user to give distance in kilometers and then the program will convert the given kilometers into miles equivalent using pointers in C++ programming language.

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.
Please subscribe to my channel  https://www.youtube.com/channel/UCOs-lpOoIeJoh6gpJthPoGg
=================================================

You can buy my C++ book online at  

https://www.mindshaperspublishing.com/product/beginners-guide-to-c-programming/

You can buy my book in introduction to computer networking at 
https://www.unlimitedbooksph.com/product-page/introduction-to-computer-networking

Want to support my channel?
GCash Account
Jake Pomperada

09173084360

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Thank you very much for your support.

Program Listing

#include <iostream>

#include <iomanip>

using namespace std;

void convert(double* km, double* mi) {

// 1 kilometer = 0.621371 miles

*mi = *km * 0.621371;

}

int main() {

double km, mi;

cout <<"\n\n";

cout << "\tKilometers To Miles Using Pointers in C++\n\n";

cout << "Enter kilometers: ";

cin >> km;

convert(&km, &mi);

cout <<"\n\n";

cout << fixed << setprecision(2);

cout << km << " kilometers is equivalent to " << mi << " miles." << endl;

return 0;

}

Wednesday, April 5, 2023

What is Research?

Tuesday, April 4, 2023

Average Quiz OOP in C++

A simple object oriented programming program to compute the average quiz of the students using C++ programming language.

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.
Please subscribe to my channel  https://www.youtube.com/channel/UCOs-lpOoIeJoh6gpJthPoGg
=================================================

You can buy my C++ book online at  

https://www.mindshaperspublishing.com/product/beginners-guide-to-c-programming/

You can buy my book in introduction to computer networking at 
https://www.unlimitedbooksph.com/product-page/introduction-to-computer-networking

Want to support my channel?
GCash Account
Jake Pomperada

09173084360

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Thank you very much for your support.

Program Listing

#include <iostream>

#include <iomanip>

#define MAX 3

using namespace std;

class Student {

private:

string name[MAX];

int q1[MAX];

int q2[MAX];

int q3[MAX];

float ave(int a, int b, int c);

public:

void getRec();

void display();

};

void Student::getRec(){

int i;

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

cout <<"Name: ";

cin >> name[i];

cout << "Input quiz 1: ";

cin >> q1[i];

cout << "Input quiz 2: ";

cin >> q2[i];

cout << "Input quiz 3: ";

cin >> q3[i];

}

void Student::display(){

int i;

float av;

system("cls");

cout <<"\n\n";

cout <<"\tAverage Quiz OOP in C++\n\n";

cout << " Name\tQuiz1\tQuiz2\tQuiz3\tAverage\tRemarks\n";

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

av = ave(q1[i],q2[i],q3[i]);

cout << fixed << setprecision(0);

cout <<name[i]<<"\t"<<q1[i]<<"\t"<<q2[i]<<"\t"<<q3[i]<<"\t"<<av;

if (av >= 75.0)

cout <<"\tPassed.\n";

else

cout <<"\tFailed."<<endl;

}

float Student::ave(int a, int b, int c){

return ((a+b+c)/3.0);

}

int main(){

Student course;

course.getRec();

course.display();

}

Monday, April 3, 2023

Bubble Sort in Python

A program to show the concept of bubble sort algorithm using Python programming language.

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.
Please subscribe to my channel  https://www.youtube.com/channel/UCOs-lpOoIeJoh6gpJthPoGg
=================================================

You can buy my C++ book online at  

https://www.mindshaperspublishing.com/product/beginners-guide-to-c-programming/

You can buy my book in introduction to computer networking at 
https://www.unlimitedbooksph.com/product-page/introduction-to-computer-networking

Want to support my channel?
GCash Account
Jake Pomperada

09173084360

Paypal
https://paypal.me/jakerpomperada

Patreon
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Thank you very much for your support.







Program Listing

def bubbleSort(arr):
    n = len(arr)
    for i in range(n):
        for j in range(0, n-i-1):
            if arr[j] > arr[j+1] :
                arr[j], arr[j+1] = arr[j+1], arr[j]

arr = [-67, 336, 23, 15, 21, -11, 92]

bubbleSort(arr)

print("Sorted Array of Values")
for i in range(len(arr)):
    print("%d" %arr[i])

Sunday, April 2, 2023

Asterisk Triangle Image in Pascal

A program to create an asterisk triangle image using Pascal programming language.

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.
Please subscribe to my channel  https://www.youtube.com/channel/UCOs-lpOoIeJoh6gpJthPoGg
=================================================

You can buy my C++ book online at  

https://www.mindshaperspublishing.com/product/beginners-guide-to-c-programming/

You can buy my book in introduction to computer networking at 
https://www.unlimitedbooksph.com/product-page/introduction-to-computer-networking

Want to support my channel?
GCash Account
Jake Pomperada

09173084360

Paypal
https://paypal.me/jakerpomperada

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Thank you very much for your support.




Program Listing

program CenteredTriangle;

var
  rows, i, j, k: integer;

begin
  rows := 8;

  for i := 1 to rows do
  begin
    for j := 1 to rows - i do
    begin
      write(' ');
    end;
    for k := 1 to 2*i-1 do
    begin
      write('*');
    end;
    writeln;
  end;

  readln; // wait for user to press enter before closing program
end.