Categories
HTML/CSS JavaScript

Calculator in HTML,CSS and JavaScript

A calculator program was written by my close friend and fellow software engineer Sir Ernel. Thank you sir for sharing your work with us.
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/

Program Listing

<!DOCTYPE html>
<html>
<head>
<script>

function insert(num){
document.form.textview.value=document.form.textview.value+num;
}
function equal(){
var exp=document.form.textview.value;
if(exp){
document.form.textview.value=eval(exp);
}
}
function clear(){

  document.form.textview.value="";
}
function back(){
    var exp=document.form.textview.value;
document.form.textview.value=exp.substring(0,exp.length-1);
}

</script>
<style>
.button:hover{
background:linear-gradient(#C6F8FF,#71C2FF,#2681E6,#00BDFF,#6ED0FF);
}
#c:hover{
background:linear-gradient(#C6F8FF,#71C2FF,#2681E6,#00BDFF,#6ED0FF);}
#F:hover{
background:linear-gradient(#C6F8FF,#71C2FF,#2681E6,#00BDFF,#6ED0FF)
;}
#F{
background:black;
color:white;
transition-duration:1s;
}
#c{
background:linear-gradient(#EDEDED,red,#FFB6B9);
color:white;
transition-duration:1s;
}
.button{
padding:0;
border-radius:5px;
width:50px;
height:50px;
font-size:30px;
font-weight:500px;
box-shadow:2px 1px 5px black;
background:linear-gradient(#DDDDDD,#848484,#333333,#595959,#767676);
transition-duration:1s;
color:white;
}
.end:hover{
background:linear-gradient(#C6F8FF,#71C2FF,#2681E6,#00BDFF,#6ED0FF);
}
.end{
width:50px;
height:50px; 
margin-left:60px;
width:160px;
font-size:30px;
border-radius:5px;
box-shadow:2px 1px 5px black;
background:linear-gradient(#00FFF3,#00CEFF,#0083FF,#002CFF);
color:white;
transition-duration:1s;
}
.textview{
width:210px;
margin-left:5px;
margin-top:5px;
border-radius:5px;
padding-top:0;
background:#C2E3E3;
font-size:25px;
}
table{
margin-left:4px;
}
#zero{
height:105px;
position:absolute;
left:15px;
top:225px;
font-size:30px;
}
.main{
border:2px inset black;
background:linear-gradient(#616266,#808080);
box-shadow:2px 1px 5px;
width:225px;
height:345px;
border-radius:10px;
}
.calc{
font-family:serif;
text-align:center;
background:radial-gradient(#FF7900,#F2FF00);
border-radius:50px;
border:solid 1px; 
}
</style>
</head>
<body>
<div class="main">

<form name="form">
<input class="textview" name="textview">
</form>
<table>

<tr>
<td><input type="submit" value="7" class="button" onclick="insert(7)"></td>
<td><input type="submit" value="8"   class="button" onclick="insert(8)"></td>
<td><input type="submit" value="9" class="button" onclick="insert(9)"></td>
<td> <input type="submit" value="C" class="button" onclick="back();" id="c"></td>
</tr>
<tr>
<td><input type="submit" value="4" class="button" onclick="insert(4)"></td>
<td><input type="submit" value="5" class="button" onclick="insert(5)"></td>
<td><input type="submit" value="6" class="button" onclick="insert(6)"></td>
<td><input type="submit" value="/" class="button" onclick="insert('/')" id="F"></td>
</tr>
<tr>
<td><input type="submit" value="1" class="button" onclick="insert(1)"></td>
<td><input type="submit" value="2" onclick="insert(2)" class="button"></td>
<td><input type="submit" value="3" class="button" onclick="insert(3)"></td>
<td><input type="submit" value="" class="button" onclick="insert('')" id="F"></td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="0" class="button" onclick="insert(0)" ></td>
<td><input type="submit" value="-"  class="button" onclick="insert('-')" id="F"></td>
<td><input type="submit" value="+" class="button" onclick="insert('+') "id="F"></td>
</tr>
</table>

<input type="submit" value="=" class="end" onclick="equal()">
<input type="submit" value="." 
class="button" onclick="insert('.')" id="zero">
<p class="calc">Calculater</p> 
</div>
</body>
</html>

Categories
C

Simple Calculator using switch Statement in C

This program is being written by my good friend and fellow software engineer Sir Ernel G. Fadriquilan thank you very much, Sir, for sharing your code to us.

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.mindshaperspublishing.com/

https://www.unlimitedbooksph.com/

Program Listing

# include <stdio.h>
int main() {
    char operator;
    double firstNumber,secondNumber;
    printf("Enter an operator (+, -, *,/): ");
    scanf("%c", &amp;operator);
    printf("Enter two operands: ");
    scanf("%lf %lf",&amp;firstNumber, &amp;secondNumber);
    switch(operator)
    {
        case '+':
            printf("%.1lf + %.1lf = %.1lf",firstNumber, secondNumber, firstNumber + secondNumber);
            break;
        case '-':
            printf("%.1lf - %.1lf = %.1lf",firstNumber, secondNumber, firstNumber - secondNumber);
            break;
        case '*':
            printf("%.1lf * %.1lf = %.1lf",firstNumber, secondNumber, firstNumber * secondNumber);
            break;
        case '/':
            printf("%.1lf / %.1lf = %.1lf",firstNumber, secondNumber, firstNumber / secondNumber);
            break;
        constant (+, -, *, /)
        default:
            printf("Error! operator is not correct");
    }
    return 0;
}
Categories
Java

Math Calculator in Java

A simple math calculator program that I wrote in Java 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 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.mindshaperspublishing.com/
https://www.unlimitedbooksph.com/

Program Listing

Math_Calculator.java

import java.util.*;

public class Math_Calculator {
    public static void main(String[] args){
    Scanner Input = new Scanner(System.in);
    System.out.println("Enter Number");
    System.out.println("1 - Addition");
    System.out.println("2 - Subtraction");
    System.out.println("3 - Division");
    System.out.println("4 - Multiplication");
    
    int choice = Input.nextInt();
    if(choice==1){
        System.out.println("Enter first number");
        double num1 = Input.nextDouble();
        System.out.println("Enter Second number");
        double num2 = Input.nextDouble();
        double sum = num1+num2;
        System.out.println("sum= " + sum);
        
        
        }
    else if(choice==2){
        System.out.println("Enter first number");
        double num1 = Input.nextDouble();
        System.out.println("Enter Second number");
        double num2 = Input.nextDouble();
        double difference = num1-num2;
        System.out.println("difference= " + difference);
        
       
        }
    else if(choice==3){
        System.out.println("Enter first number");
        double num1 = Input.nextDouble();
        System.out.println("Enter Second number");
        double num2 = Input.nextDouble();
        double qoutient = num1/num2;
        System.out.println("qoutient= " + qoutient);
        
        }
   else if(choice==4){
        System.out.println("Enter first number");
        double num1 = Input.nextDouble();
        System.out.println("Enter Second number");
        double num2 = Input.nextDouble();
        double product = num1*num2;
        System.out.println("product= " + product);
        }
       else{
            System.out.println("invalid");
       }
    }
}