I come back with yet another problem I managed to solve but not quite, I solemnly promise to help back to the community once I become proficient, till them I ask for more help.

'Tis the code:

 import javax.swing.*;

double artic;

int cant;

int tipoClient; // 1 for frecuente, any other for normal..

double descNorm = 0.05;

double descFrec = 0.10;

double subt;

double desct;

double total;

String valor;

valor= JOptionPane.showInputDialog("Enter the article's price.");

artic =Integer.parseInt(valor);

valor= JOptionPane.showInputDialog("Enter amount");

cant=Integer.parseInt(valor);

valor= JOptionPane.showInputDialog("Welcome to the descount system \n Enter 1, if it is a frecuent costumer, or any other digit for a normal one");

tipoClient=Integer.parseInt(valor);

subt= artic * cant;

switch(tipoClient){

  case 1: desct= subt*descNorm;

          break;

  default: desct= subt*descFrec;

          break; 

}

total= subt-desct;

JOptionPane.showMessageDialog(null,total);

System.exit(0);

 

Greetings,

I am new to this forum and programming in general, I have just started my career as a Engineer in software development 

and so far I have loved it...but I don't love the following!

I am doing some textbook exercises to hone my skills and I have come to a problem I cannot yet solve, it regarding the following code you see below, I am new to all of this so I just learned about this selective structures and Math.pow(x,y) for some reason the code works for every operation but the one in case 3, any number I enter yields this: 

And oh my god its so ugly! What kind of sorcery spawned this!? Thus I came here willing to humbly learn and ask for assistance. So any help would be VERY appreciated. 

P.D: English is not my main tongue so excuse me any typo. I have translated any relevant variables in the code, the description // is just for me.

 import javax.swing.*;

//El programa, dados datos como dos variables de tipo entero, num y v, calcula el resultado de una funcion.

 

int num;

int v;

String valor;

double val;

valor= JOptionPane.showInputDialog("Enter 1,2 or 3");

num =Integer.parseInt(valor);

valor= JOptionPane.showInputDialog("Enter V");

v=Integer.parseInt(valor);

switch(num){

  case 1: val=100*v;

          break;

  case 2: val= Math.pow(100,v);

          break;   

  case 3: val=100/v;

          break;

  default: val=0;

          break; 

}

JOptionPane.showMessageDialog(null,val);

System.exit(0);