[Plus]

Description: how to use:

 const short* pi = ExtendPi(decimal_places);
 cout <<" "<< pi[0] <<'.';
 for(int i=1;i<decimal_places;i++)
     cout << pi[i];

/*
      function that take decimal places (10,20,30,~)
      for calculating Pi extended into power
      programmed by: khaled khunaifer [Plus]
*/

short* AdvancedPi(int PLACES=50){

  short Pi[PLACES]={3,1,4,0}   // 50 places of Pi

  long double P = ((22*(10^10))/7);  // maximize the arithmetic
  long int I= Pi; // integer part
  long double D = (Pi - I); // decimal part
 
  for(int j=0;j<PLACES/10;j++){
    for(int i=0;i<10;i++){
       Pi[9-i] = I%10;
       I /= 10;
    } // I is 0 now
    D *= (10^10);
    I = D;
    D -=I;
  }
  return Pi;
}

[Plus]

Description: how to use:

 const short* pi = ExtendPi(decimal_places);
 cout <<" "<< pi[0] <<'.';
 for(int i=1;i<decimal_places;i++)
     cout << pi[i];

modified*

/*
      function that take decimal places (10,20,30,~)
      for calculating Pi extended into power
      programmed by: khaled khunaifer [Plus]
*/

short* AdvancedPi(const int PLACES=50){

  short Pi[PLACES]={3,1,4,0}   // 50 places of Pi

  long long double P = ((22*(10^10))/7);  // maximize the arithmetic
  long long int I= Pi; // integer part
  long long double D = (Pi - I); // decimal part
 
  for(int j=0;j<PLACES/10;j++){
    for(int i=0;i<10;i++){
       Pi[9-i] = (short)(I%10); // modification
       I /= 10; // shift
    } // I is <zero> now
    D *= (10^10);
    I = D; // draw 10 digits to "extract"
    D -=I;
  }
  return Pi;
}

[Plus]

waiting for your comments ...

[bszmyd]

Sorry...but you can't initialize a variable length array:

short Pi[PLACES]={3,1,4,0}; //No go

Convert a short* to a long:

short Pi[PLACES]={3,1,4,0};

Or return an address to something declared on the stack:

short Pi[PLACES]={3,1,4,0};
return Pi;

Nothing that can't be fixed however.

[bszmyd]

That second problem should read for short* to long is: long int I= Pi;

[Plus]

thank you for your help .. i'll modify the code,