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#include<iostream>
#include<stdexcept>
#include<cstdlib>
#include<cmath>
#define DIM 50
using namespace std;
class A {
public:
A(short m) : len{m} {
arr = new short[m];
srand(time(NULL));
for(int i = 0; i < m; ++i) {
arr[i] = rand()%10+1;
}
}
~A() {
delete[] arr;
}
virtual double f(short a) = 0;
virtual void print(ostream& os) = 0;
short getLen() {
return len;
}
protected:
short get(short i) {
if(i < 0 || i >= getLen())
throw out_of_range{"out of arr' range"};
return arr[i];
}
private:
short* arr;
short len;
};
template<typename T>
class B : public A {
public:
B(short m, char c) : A{m} {
if(typeid(T) == typeid(char)) {
x = c;
} else if(typeid(T) == typeid(string)) {
for(int i = 0; i < m; ++i)
x+=c;
} else {
// tipo non gestito
throw bad_typeid{};
}
}
double f(short a) override {
double n = static_cast<double>(getLen() - a);
double sum{};
for(int i = a; i < getLen(); ++i)
sum+=get(i);
return sum/n;
}
void print(ostream& os) override {
os << "B<" << (typeid(T) == typeid(char) ? "char" : "string") << "> arr=[";
for(int i = 0; i < getLen(); ++i)
os << get(i) << ' ';
os << "], x=" << x;
}
double foo(short s) {
return log(s) + sin(f(s));
}
private:
T x;
};
class C : public A {
public:
C(short n, int k) : A{n}, y{k} {}
double f(short a) override {
srand(time(NULL));
short rand_elem = get(rand()%getLen());
return static_cast<double>(a+y)/static_cast<double>(rand_elem);
}
double g(short w) {
// sicuri che non debba convertire a double? qui sarà sempre 0, forse 1
return static_cast<double>(sin(w+y));
}
void print(ostream& os) override {
os << "C arr=[";
for(int i = 0; i < getLen(); ++i)
os << get(i) << ' ';
os << "], y=" << y;
}
C& operator++() {
++y;
return *this;
}
private:
int y;
};
ostream& operator<<(ostream& os, A& a) {
a.print(os);
return os;
}
int main() {
srand(111222333);
A *vett[DIM];
double max_f3{-100000000.0};
short c_count{};
double gsum{};
short i_to_p{-1};
for(int i=0; i<DIM; i++) {
short n=1+rand()%10;
switch(rand()%3) {
case 0:
{
vett[i]= new C(n, rand()%10 + 1);
i_to_p = i;
auto cref = dynamic_cast<C&>(*(vett[i]));
gsum+=cref.g(5);
++c_count;
break;
}
case 1:
vett[i]= new B<string>(n, rand()%('z' - 'a' + 1) + 'a');
break;
case 2:
vett[i]= new B<char>(n, rand()%('z' - 'a' + 1) + 'a');
}
auto f3 = vett[i]->f(3);
if(f3 > max_f3)
max_f3 = f3;
}
for(int i = 0; i < DIM; ++i)
cout << i+1 << ')' << *(vett[i]) << ", f(3)=" << vett[i]->f(3) << endl;
cout << "max f(3)=" << max_f3;
cout << " avg g(5)=" << (static_cast<double>(gsum/c_count)) << endl;
if(i_to_p >= 0) {
cout << *(vett[i_to_p]) << endl;
auto cref = dynamic_cast<C*>(vett[i_to_p]);
++(*cref);
cout << *(vett[i_to_p]) << endl;
}
return 0;
}
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