Cleanest way to avoid writing same condition twice

Lets say I have a loop that inputs a value from user, and if the value is equal to zero, it breaks.

Is there a way to do this without writing the same condition twice?

for example:

int x;

do
{
    std::cin >> x;
    
    if (x)
    {
        //code
    }

} while(x);

What is the cleanest way to do this?

>Solution :

When you write the code exactly as you described it with words it get’s simpler:

int x;

while(std::cin >> x) // I have a loop that inputs a value from user, and ...
{
    if(x == 0)       // if the value is equal to zero, ...
    {
        break;       // it breaks.
    }

    // do something with x ...
}

The reason for having std::cin >> x; as condition is to stop reading when invalid input is entered or the stream ends.