#include <iostream>
using namespace std;

int main()
{
    int i; 
     
    for (i = 1; i <= 10; i*=2) 
    {
        cout << i<<", ";
    }
      
    return 0;
}

 for i in range(len(mass)-1)):
    print(mass[i] == mass[i+1])

 #include <iostream>
using namespace std;
int main()
{
    int i; 
    int a[] = {10, 1, 5, 7, 3, 4, 2, 5, 9, 6, 4, 8};
    for (i = 1; i <= 10; i=i+2) 
    {
       if (a[i]>a[i+1]) 
        {cout << a[i]<<" > "<<a[i+1]<< endl;}
       else
        {cout << a[i]<<" < "<<a[i+1]<< endl;} 
    }
      
    return 0;
}

 Output:
10 > 1
5 < 7
3 < 4
2 < 5
9 > 6
4 < 8

  range(10)[::2]

 range(1, 11, 2)

  
>>> print(*range(1, 11, 2), sep='\n')
1
3
5
7
9
>>>

  
>>> for i in range(1, 11, 2):
...   print(i, '->', i * i)
... 
1 -> 1
3 -> 9
5 -> 25
7 -> 49
9 -> 81
>>>