اینم سورس به زبان سی

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

int LenNum (int num);
int SelNum (int num,int sel);
int Sqr (int num,int tavan);
int ConToTen (int num,int mabna);
int ConFromTen (int num,int mabna);

void main()
{
clrscr();
int num,mabna1,mabna2;
cout << "Please Enter Your Number With Mabna : ";
cin>>num>>mabna1;
cout<<"Please Your Want Mabna : ";
cin>>mabna2;
cout << "Your Number Is "<< num << "("<<mabna1<<") "
  <<"Result Is : "<< ConFromTen(ConToTen(num,mabna1),mabna2)<<"("
  <<mabna2<<")";
getch();
}

//*********************************Len Num Function**************************
int LenNum (int num)
{
int count=0;
while (num)
 {
 num=num/10;
 count++;
 }
return count;
}

//*********************************Sel Num Function**************************
int SelNum (int num,int sel)
{
int count=0;
if (LenNum(num)>=sel)
 {
 while (num)
  {
  count++;
  if (count == sel)
   return (num % 10);
  num=num/10;
  }
 }
else
 {
 sel=LenNum(num);
 return (SelNum(num,sel));
 }
}

//*********************************Sqr Function******************************
int Sqr (int num,int tavan)
{
int result=1;
if (tavan==0)
 return 1;
for (int count = 1; count <= tavan ; count++)
 result *=num;
return result;
}

//***********************Convert To Ten Function*****************************
int ConToTen (int num,int mabna)
{
int sum=0,sqrnum=0;
for (int count = 1; count<= LenNum(num);count++)
 {
 if ((SelNum(num,count))==mabna)
  {
  cout << "Your Number Or Mabna Is Invalid !";
  return 0;
  }
 sum += SelNum(num,count) * Sqr(mabna,sqrnum);
 sqrnum++;
 }
return sum;
}

//*********************Convert From Ten Function*****************************
int ConFromTen (int num,int mabna)
{
int result=0,tencount=1,test=1;
while (test)
 {
 result += (num % mabna) * tencount;
 num=num/mabna;
 tencount*=10;
 if (num<mabna)
  {
  result += num * tencount;
  return result;
  test=0;
  }
 }
return result;
}