CONVERTIR UN NOMBRE DECIMAL EN N'IMPORTE QUELLE BASE (JUSQU'À LA BASE 16)

#include <stdio.h>
#include <stdlib.h>
#include <iostream.h>
#include <conio.h>

unsigned int tab[50];
unsigned int decimal;
unsigned int base;

unsigned int reste_div(unsigned int n, unsigned int v)
{
unsigned int x=n%v;
return x;
}

unsigned int result_div(unsigned int n, unsigned int v)
{
unsigned int x=n/v;
return x;
}

void affichage_a(unsigned int n)
{
if (n<=9) cout<<n;
else if (n==10) cout<<"A";
else if (n==11) cout<<"B";
else if (n==12) cout<<"C";
else if (n==13) cout<<"D";
else if (n==14) cout<<"E";
else if (n==15) cout<<"F";
}

void affichage_b(void)
{
int m=0;
cout<<decimal<<" correspond \205 ";
for (int j=49;j>=0;j--) {if (tab[j]!=0) m=1; if(m==1) affichage_a(tab[j]);}
if (m==0) cout<<"0";
cout<<" en base "<<base<<" .\n";
}

void calcul(unsigned int nbre, unsigned int v)
{
int i=0;
unsigned int temp;
tab[i]=nbre;
temp=nbre;
while (temp>0){

						{
                  tab[i]=reste_div(temp,v);
                  temp=result_div(temp,v);
                  //cout<<"tab[i]="<<tab[i]<<" temp="<<temp<<" i="<<i<<endl;
                  i++;
                  }

			    	}
}

int main(void)
{

int choix;
for(;;){
cout<<"\n\n";
cout<<"Convertir un nombre decimal en un nombre de n'importe quelle base, tapez 1\n";
cout<<"Quitter, tapez une autre touche\n\n";
cout<<"Entrez votre choix : ";
choix=getch();

if (choix==49)     {
system("cls");
for(int k=0;k<50;k++) tab[k]=0;  //Initialisation du tableau
cout<<"\n\n";
cout<<"En quelle base voulez vous convertir votre nombre decimal ?\n";
cout<<"Tapez la base (16 au maximum): ";
cin>>base;
cout<<"Quel nombre decimal voulez vous convertir en base "<<base<<" ?\n";
cin>>decimal;

calcul(decimal,base);
system("cls");
gotoxy(5,5);
affichage_b();
cout<<endl;

system("pause");
system("cls");
                   }
else return 0;
      }
}