CALCUL DE LA FREQUENCE DE RÉSONNANCE D'UN CIRCUIT BOUCHON (L/C EN ÉLECTRONIQUE)

/*
  Calcul circuit L/C
  Frequence de resonnance
  TOSSOUKPE Gilles
  le 13-09-2009
*/  

#include <cstdlib>
#include <iostream>
#include <math.h>
#include <conio2.h>

using namespace std;

double self;
double capa;
float resultat;

int methode ;
int x;

void calc_freq1();
void calc_freq2();

void calc_freq1()
{
    resultat = (1 / ((2 * M_PI) * sqrt(self * capa))) / 1000000;
}

void calc_freq2()
{    
  resultat = 159 / sqrt(self * capa) ;   
} 

void afficher()
{
    cout << " -------------------------------------- " << endl;
    cout << "                                        " << endl;
    cout << "           Calcul de frequence          " << endl;
    cout << "     Circuit bouchon (self / capacite)  " << endl;
    cout << "     Tossoukpe Gilles 13-09-2009        " << endl;
    cout << "             Version 2.0                " << endl;
    cout << "                                        " << endl;
    cout << " -------------------------------------- " << endl;
    cout << endl; 
}   
     
int main()
{
   init:
    clrscr();
    afficher();     
         
   debut:
    cout << "      Choix de la methode               " << endl;
    cout << endl;
    cout << "  1 - Methode complete                  " << endl;
    cout << "  2 - Methode simplifiée                " << endl;
    cin  >> methode;
    
   if(methode == 1)
   {  
    cout << " Entrez la valeur de la self              (Self en Henry)   :  " ;
    cin  >> self ; 
    cout << endl;
    cout << " Entrez la valeur de la capacite       (Capacite en Farad)  :  " ;
    cin  >> capa;   
    cout << endl;
   }
   if(methode == 2)
   {
    cout << " Entrez la valeur de la self         (Self en micro Henry)  :  " ;
    cin  >> self ; 
    cout << endl;
    cout << " Entrez la valeur de la capacite   (Capacite en pico Farad) :  " ;
    cin  >> capa;   
    cout << endl;         
   }
   
    
    /* Controle boucle de retour au 'debut' avec switch */
    
    if (!methode || methode > 2)
    {
       cout << " Valeur interdite recommencer ... " << endl;
       system("pause");
       
       goto debut;
    }
    
    switch (methode)
    {
    case 1:
          
          calc_freq1();
          cout << " Choix  Methode complete " << endl;                
          cout << endl;
          cout << " Frequence ( traditionelle )de resonnance du circuit  : " << resultat << "  MegaHertz " << endl;   
        
         break;
    
    case 2:
         
         calc_freq2();
         cout << " Choix Methode simplifie                            " << endl ;
         cout << " Frequence ( pratique ) de resonnance du circuit  : " << resultat << " MegaHertz" << endl;

         break;
    
    default:
            cout << " Valeur interdite recommencer ... ";
            system("pause");
            goto debut;                         
    } 
    
    cout << " Voulez vous recommencer ?  1 : oui  2 : non "  << endl;
    cin  >>  x ;
    
    if (x == 1)
    {
          goto init;
    }     
    else
    return 0;
}