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{
#include <iostream>
using namespace std;
void func1(double a1, double d, double n, double &z);
void func2(double a1, double d, double n, double &z);
int main()
{
double a1, d, n,z;
int o;
cout << "Welcome, to the greatest formula calculator of all times. Please choose an operation dear user:" << endl << "0 - End" << endl << "1 - Aritmethic" << endl << "2 - Geometric"<<endl;
cin >> o;
if(o=2)
{
cout << "Please enter a1,d and n" << endl;
cin >> a1 >> d >> n;
z = a1;
func2(a1, d, n, z);
cout << z;
}
if (o =1)
{
cout << "Please enter a1,d and n" << endl;
cin >> a1 >> d >> n;
z = a1;
func1(a1, d, n, z);
cout << z;
}
if(o=0)
{
cout << "Thank you for using my program"<<endl;
return 0;
}
}
void func1(double a1, double d, double n, double &z)
{
for (int i = 0; i<(n-1); i = i + 1)
{
cout << z << " ";
z = z + d;
}
}
void func2(double a1, double d, double n, double &z)
{
for (int i = 0; i<(n - 1); i = i + 1)
{
cout << z << " ";
z = z * d;
}
}
}
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