цикл 3 - 2

1))))#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    int i = 60;
    do cout << i<<"\n";
    while ((i-=2) >= 10);
    cout << endl;
    system("pause");
    return 0;
}


2))))#include<iostream>
#include<cmath>
using namespace std;
int main()
{
        int i = 60;
        while (i >= 10)
       { cout << i << "\n" << endl; i-=2;
       }
        system("pause");
        return 0;
}


3))))#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    for (int i=60; i>=10; i-=2)
        cout << i <<"\n";
    system("pause");
    return 0;
}