Вывести стоимость указанной массы конфет, при заданной цене за килограмм

#include <iostream>
#include <conio.h>
 
using namespace std;
 
int main() {
    int price;
    float number;
    cin >> price >> number;
    cout << price*number << "\n";
    getch();
    return 0;
}

#include <iostream>
#include <conio.h>
 
using namespace std;
 
int main() {
    int price;
    cin >> price;
    for( float i = 1.0; i < 2.0; i += 0.2 ) {
        cout <<  i << "kg sweet price = " << price*i << "\n";
    }
    getch();
    return 0;
}

//Title of this code
//g++  4.9.2
 
#include <iostream>
 
 
template<size_t WeightBegin, size_t WeightEnd, bool>
struct Foo_impl
{
    void operator()(double price)
    {
        std::cout << WeightBegin/10.0 << " kg.: " << WeightBegin*price/10.0 << "$" << std::endl ;
        Foo_impl<WeightBegin+2, WeightEnd, (WeightBegin+2)<=WeightEnd>()(price) ;
    }
} ;
 
 
 
template<size_t WeightBegin, size_t WeightEnd>
struct Foo_impl<WeightBegin, WeightEnd, false>
{
    void operator()(double)
    {
    }
} ;
 
 
 
 
template<size_t WeightBegin, size_t WeightEnd>
void foo(double price)
{
    Foo_impl<WeightBegin*10, WeightEnd*10, WeightBegin<=WeightEnd>()(price) ;
}
 
 
 
int main()
{
    foo<1,2>(10.0) ;
}