Do You Want To Continue in Java and Calculator

 A simple calculator with do you want to continue in Java programming language.

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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.

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Program Listing

package demo;

import java.util.Scanner;

public class mdas {

public static void main(String[] args) {

    // create Scanner class object to  

      // read inputs

      Scanner scan = new Scanner(System.in);

  // Declare variables

      int num1=0, num2=0;

      char operator='\0';

 

      char choice= '\0';

   do {

      

 

       

      System.out.print("Enter the first Number      :  ");

      num1 = scan.nextInt();

      System.out.print("Enter the the Second number :  ");

            num2 = scan.nextInt();

      // read operator

      System.out.println("Available Operators"

+ "are::  (+ - * /)");

      System.out.print("Choose Oerator : ");

      operator = scan.next().charAt(0);

     

     if  (operator == '+') {

        System.out.println("The sum of  "+ num1 + " and " + num2 + " is " + (num1+num2)+".");

     } else if (operator == '-'){

   System.out.println("The difference between  "+ num1 + " and " + num2 + " is " + + (num1-num2)+".");

     }

     else if (operator == '*') {

    System.out.println("The product between  "+ num1 + " and " + num2 + " is " + + (num1*num2)+".");

     }

     else if (operator == '/') {

    System.out.println("The quotient betwenn  "+ num1 + " and " + num2 + " is " + + (num1/num2)+".");

}

else {

    System.out.println("Invalid operator");

      } // end of switch-case

   

     System.out.print("Do you want to perform another calculation? [y-yes/n-no] : ");

    

     choice = scan.next().charAt(0);

     

     if (choice == 'N'|| choice == 'n') {

   

    System.out.print("End of Program");

    break;

     }

     

   } while(choice == 'Y'|| choice == 'y');

         

scan.close();

      

}

    

}

Count Lowercase Characters in Python

Count Lowercase Characters in Python

 A simple program that I wrote using Python asks the user to give a string and then the program will count the number of lowercase characters.

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 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

=================================================

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GCash Account

Jake Pomperada

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Thank you very much for your support. 

Program Listing

print()
print("\tCount Lowercase Characters in Python\n")

string=input("\tGive a string : ")
count=0
for i in string:
      if(i.islower()):
            count=count+1
print();
print("\tThe number of lowercase characters is:" , count);
print()
print("\tEnd of Program")

Visiting Tinagong Dagat at Sipalay City, Negros Occidental

Student Grading Database System in C++

STUDENT GRADING DATABASE SYSTEM IN C++

 Machine Problem

Create a Student Grading System using a text file which allows the  user to add student record, view student record, edit student record, find student record, remove or delete student record in the text file database.

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 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

=================================================

Want to support my channel?

GCash Account

Jake Pomperada

09173084360

Paypal

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Patreon

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Thank you very much for your support. 

Program Listing

// student.cpp

// Written By Mr. Jake R. Pomperada, BSCS, MAED-IT

// July 26, 2018  Thursday

// Bacolod City, Negros Occidental Philippines

// Website : http://www.jakerpomperada.com

// Email Address : jakerpomperada@jakerpomperada.com and jakerpomperada@aol.com

#include <iostream>

#include <iomanip>

#include <cmath>

#include <stdlib.h>

#include <string.h>

#include <conio.h>

#include <ctype.h>

using namespace std;

 

 

int main( )

{

FILE *fp, *ft ;

char another, choice ;

struct student

{

char stud_id_no[300];

char name[300];

char course[300];

char subject[300];

float prelim,midterm,endterm,final_grade;

} ;

struct student grade;

char student_id[300];

long int recsize;

    int flag=0;

fp = fopen ("GRADE_DB.DAT", "rb+" ) ;

if ( fp == NULL )

{

fp = fopen ( "GRADE_DB.DAT", "wb+" ) ;

if ( fp == NULL )

{

puts ( "Cannot open file" ) ;

exit(0) ;

}

}

recsize = sizeof ( grade ) ;

while ( 1 )

{

        system("CLS");

        system("COLOR F0"); 

setprecision(0);

        cout <<"\n";

cout << "\n\t==========================================";

cout <<"\n";

cout <<"\n\tSTUDENT GRADING DATABASE SYSTEM IN C++";

cout <<"\n\n";

cout << "\tCreated By Mr. Jake R. Pomperada,MAED-IT";

cout <<"\n\t==========================================";

cout <<"\n\n";

cout << "\t[1] INSERT STUDENT RECORD";

cout <<"\n";

cout << "\t[2] BROWSE STUDENT RECORD";

cout <<"\n";

cout << "\t[3] EDIT STUDENT RECORDS" ;

cout <<"\n";

cout  <<"\t[4] FIND STUDENT RECORDS";

cout <<"\n";

cout << "\t[5] REMOVE STUDENT RECORDS";

cout <<"\n";

cout  << "\t[6] QUIT PROGRAM" ;

cout <<"\n\n";

cout  <<"\tSELECT YOUR OPTION :=> ";

fflush (stdin) ;

choice = getche() ;

switch ( choice )

{

case '1' :

fseek ( fp, 0 , SEEK_END ) ;

another = 'Y' ;

while ( another == 'Y' )

{

system("cls");

cout <<"\n\n";

cout << "\t=== INSERT NEW STUDENT GRADE RECORD ===";

cout <<"\n\n";

cout <<"\tEnter Student ID Number : ";

                    cin >> grade.stud_id_no;

cout << "\tEnter Student Name: ";

fflush (stdin) ;

gets(grade.name);

cout <<"\tEnter Course : ";

fflush (stdin) ;

gets(grade.course);

                    cout <<"\tEnter Subject : ";

fflush (stdin) ;

gets(grade.subject);

cout <<"\tEnter Prelim Grade: ";

cin >> grade.prelim;

cout << "\tEnter Midtem Grade: ";

cin >> grade.midterm;

cout << "\tEnter Endterm Grade: ";

cin >> grade.endterm;

grade.final_grade = (grade.prelim * 0.30) + (grade.midterm * 0.30) + (grade.endterm * 0.40);

cout << "\n";

                    cout << "\n\tStudent Final Grade : "  << round(grade.final_grade);

fwrite (&grade, recsize, 1, fp ) ;

cout << "\n\n";

cout  << "\n\tAdd New Student Record (Y/N) : " ;

fflush (stdin) ;

another = toupper(getche()) ;

}

break ;

case '2' :

        system("cls");

rewind ( fp );

cout << "\n\n";

                cout <<"\t=== VIEW STUDENT GRADE RECORD ===";

                cout <<"\n\n";

while ( fread ( &grade, recsize, 1, fp ) == 1 )

        {

       cout <<"\n";

       cout <<"\n\t  ID Number        : " <<grade.stud_id_no;

       cout <<"\n\t  Name             : " <<grade.name;

       cout <<"\n\t  Course           : " <<grade.course;

       cout <<"\n\t  Subject          : " << grade.subject;

       cout <<"\n\t  Prelim Grade     : " <<grade.prelim;

       cout <<"\n\t  Midterm Grade    : " <<grade.midterm;

       cout <<"\n\t  Endterm Grade    : " <<grade.endterm;

       cout <<"\n";

       grade.final_grade = (grade.prelim * 0.30) + (grade.midterm * 0.30) + (grade.endterm * 0.40);

       cout <<"\n\t Student Final Grade : " <<round(grade.final_grade);

  }

          cout <<"\n\n";

         system("pause");

break ;

case '3' :

another = 'Y' ;

while ( another == 'Y' )

{

system("cls");

          cout <<"\t=== EDIT STUDENT GRADE RECORD ===";

        cout <<"\n\n";

          cout <<"\tEnter Student ID Number : ";

                cin >> student_id;

    rewind ( fp ) ;

cout <<"\n";

while ( fread ( &grade, recsize, 1, fp ) == 1 )

{

if ( strcmp ( grade.stud_id_no, student_id) == 0 )

{

cout <<"\tEnter Student ID Number : ";

                            fflush (stdin) ;

                            gets(grade.stud_id_no);

cout <<"\tEnter Student Name : ";

fflush ( stdin ) ;

gets(grade.name);

        cout <<"\tEnter Course: ";

fflush ( stdin ) ;

gets(grade.course);

cout <<"\tEnter Subject : ";

fflush ( stdin ) ;

gets(grade.subject);

cout <<"\tEnter Prelim Grade : ";

cin >> grade.prelim;

cout <<"\tEnter Midtem Grade : ";

cin >> grade.midterm;

cout <<"\tEnter Endterm Grade: ";

cin >> grade.endterm;

cout <<"\n";

grade.final_grade = (grade.prelim * 0.20) + (grade.midterm * 0.30) + (grade.endterm * 0.50);

cout <<"\n\tStudent Final Grade : " << round(grade.final_grade);

fseek ( fp, - recsize, SEEK_CUR ) ;

fwrite ( &grade, recsize, 1, fp ) ;

break ;

}

}

if (strcmp(grade.stud_id_no,student_id) != 0 )

                 {  

                   cout <<"\n\n";

                   cout <<"\tNo Student Record in the Database.";

                   cout <<"\n";

                   system("pause");

                   break;

                   }

                 cout <<"\n\n";

     cout  <<"\n\tEdit Another Student Record (Y/N) : ";

fflush ( stdin ) ;

another = toupper(getche());

}

break ;

      case '4' :

   rewind ( fp ) ;

   another = 'Y' ;

while ( another == 'Y' )

{

system("cls");

        cout <<"\t=== Find Student Records ===";

        cout <<"\n\n";

     cout <<"\tEnter Student ID Number : ";

                 cin >>student_id;

cout <<"\n";

rewind ( fp ) ;

while ( fread ( &grade, recsize, 1, fp ) == 1 )

{

if ( strcmp (grade.stud_id_no,student_id) == 0 )

{

                    cout <<"\n";

cout <<"\n\tID Number      : " <<grade.stud_id_no;

cout <<"\n\tName           : " << grade.name;

cout <<"\n\tCourse         :  " <<grade.course;

            cout <<"\n\tSubject        : " <<grade.subject;

                    cout <<"\n\tPrelim Grade   :  " <<grade.prelim;

                   cout <<"\n\tMidterm Grade  :  " <<grade.midterm;

                   cout <<"\n\tEndterm Grade  : " << grade.endterm;

                   cout <<"\n";

       grade.final_grade = (grade.prelim * 0.30) + (grade.midterm * 0.30) + (grade.endterm * 0.40);

       cout <<"\n\tStudent Final Grade : " << round(grade.final_grade);

       cout <<"\n\n";

       system("pause");

       break;

}

}

      if (strcmp(grade.stud_id_no,student_id) != 0 )

          {

            cout <<"\n\n";

            cout <<"\tNo Student Record found in the Database.";

            cout <<"\n";

            system("pause");

            break;

           }

                    cout  <<"\n\n";

cout  <<"\n\tFind Another Student Record (Y/N) : " ;

fflush ( stdin ) ;

another = toupper(getche());

}

break ;

case '5' :

another = 'Y' ;

while ( another == 'Y' )

{

system("cls");

                    cout <<"\t=== REMOVE STUDENT GRADE RECORD ===";

                    cout <<"\n\n";

cout <<"\tEnter Student ID Number : ";

                    cin >> student_id;

cout <<"\n";

ft = fopen ( "TEMP.DAT", "wb" ) ;

rewind ( fp ) ;

while ( fread ( &grade, recsize, 1, fp ) == 1 )

{

if ( strcmp (grade.stud_id_no, student_id) != 0 )

fwrite ( &grade, recsize, 1, ft ) ;

                 else

                flag=1;

                  }

fclose ( fp ) ;

fclose ( ft ) ;

remove ( "GRADE_DB.DAT" ) ;

rename ( "TEMP.DAT", "GRADE_DB.DAT" ) ;

    fp = fopen ( "GRADE_DB.DAT", "rb+" ) ;

       if(flag==1) {

         cout <<"\n\n";

         cout <<"\tRecord Successfully Deleted From the Database.";

         cout <<"\n";

         system("pause");

         }

else if (flag!=1) {

             cout <<"\n\n";

             cout <<"\tRecord Not Found in the Database.";

             cout <<"\n";

            system("pause");

             }

                    cout <<"\n\n";

cout << "\tRemove Another Student Record (Y/N) : " ;

fflush (stdin) ;

another = toupper(getche());

}

break ;

case '6' :

fclose ( fp ) ;

cout <<"\n\n";

cout <<"\tEND OF PROGRAM";

cout <<"\n\n";

cout << "\tThank You Very Much For Using This Software.";

cout <<"\n\n";

system("PAUSE");

exit(0);

}

}

} // End of Code

Kilometers To Miles in C#

Kilometers To Miles in C#

 A simple program to ask the user to give distance in kilometers and then convert into miles 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 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

=================================================

Want to support my channel?

GCash Account

Jake Pomperada

09173084360

Paypal

https://paypal.me/jakerpomperada

Patreon

https://www.patreon.com/jakerpomperada

Thank you very much for your support. 

Program Listing

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            Console.Write("\n");

            Console.Write("\tKilometers To Miles in C#\n\n");

            Console.Write("Enter Distance in Kilometers : ");

            double kilometers = Convert.ToDouble(Console.ReadLine());

            double miles = kilometers / 1.6;

            Console.Write("\n\n");

            Console.WriteLine(kilometers + " Kilometer(s) " + " the equivalent  in miles is " + miles + " Miles");

            Console.Write("\n");

            Console.Write("\tEnd of Program");

            Console.Write("\n");

            Console.ReadKey();

        }

    }

}