Вывести члены арифметической прогрессии, которые не превышают 100, с заданым начальным членом и шагом (через while)

#include <iostream> 
#include <iomanip> 
using namespace std; 
 
void geometricalProgression(double, double, int); 
 
int main() 
{ 
 double number, progressionDenominator; 
 int members; 
 cout << "\n Enter number: "; 
 cin >> number; 
 cout << "\n Enter a progression denominator: "; 
 cin >> progressionDenominator; 
 cout << "\n Enter quantity of members of a progression: "; 
 cin >> members; 
 
 geometricalProgression(number, progressionDenominator, members); 
 
 cin.get(); cin.get(); 
 return 0; 
} 
 
void geometricalProgression(double a, double b, int c) 
{ 
 if (c > 100 || c < 1) 
 { 
 cout << "\n Error! \a"; 
 return; 
 } 
 else 
 { 
 cout << endl << a; 
 while (c > 1) 
 { 
 a *= b; 
 cout << setprecision(17) << endl << a; 
 c--; 
 } 
 } 
}

#include <iostream> 
#include <iomanip> 
using namespace std; 
 
void geometricalProgression(double, double, int); 
 
int main() 
{ 
 double number, progressionDenominator; 
 int members; 
 cout << "\n Enter number: "; 
 cin >> number; 
 cout << "\n Enter a progression denominator: "; 
 cin >> progressionDenominator; 
 cout << "\n Enter quantity of members of a progression: "; 
 cin >> members; 
 
 geometricalProgression(number, progressionDenominator, members); 
 
 cin.get(); cin.get(); 
 return 0; 
} 
 
void geometricalProgression(double a, double b, int c) 
{ 
 if (c > 100 || c < 1) 
 { 
 cout << "\n Error! \a"; 
 return; 
 } 
 else 
 { 
 cout << endl << a; 
 while (c > 1) 
 { 
 a *= b; 
 cout << setprecision(17) << endl << a; 
 c--; 
 } 
 } 
}

#include <iostream>
 
using namespace std;
 
int main()
{
    double a, d;
    cout<<"a_1 = "; cin>>a;
    cout<<"d = "; cin>>d;
 
    while(a <= 100)
    {
        cout<<a<<" ";
        a += d;
    }
    cout<<endl;
    system("pause");
    return 0;
}