Can I if(for(?

[belgarionriva]

Can I?

I need to do make a loop inside a condition. Can it be done? I don't want to call another function to do it. Any way at all without calling separate function inside the if? I just want to do:

if (

    for (int i = 0; i<=10; i++)
      {
              //stuff related to the for loop
       }   )

    
{

//stuff related to the initial if condition

};

[Bourgond Aries]

You could use a boolean-returning lambda that's called at declaration. I do not think a for-loop is a boolean construct, and can therefore not be used in this circumstance.

[belgarionriva]

So... no?

[giblit]

Can you explain to me what you are trying to do?

if it can loop then loop?

[Stewbond]

You have two options:
1.

for (int i = 0; i < 10; i++)
{
    // stuff related to the for loop
}
if (condition_calculated_in_for_loop)
{
    // stuff related to the initial if condition
}

2.

bool condition()
{
    for (int i = 0; i < 10; i++)
    {
        // stuff related to the for loop
    }
}
//  Now you have some code below: 
int main()
{
    if ( condition() )
    {
        // stuff related to the initial if condition
    }
}

In the second option, you are running the for loop and returning a bool value which is evaluated by the if condition. I think this is what you are thinking of.

[mutexe]

I never understand these 'can I....?' questions.
Just code it up and try it dude :)

[Bourgond Aries]

3. If you want to read it in-line :3

int a(13), b(12), c(9);
if
(
    [&]() -> bool
    {
        for (int i(0); i < 100; ++i)
        {
            if (a * b * c - i > 9)
                continue;
            else
                return false;
        }
        return true;
    }()
)
{
    std::cout << "yes!\n";
}

[belgarionriva]

Thanks stew & Bourgond Aries!
@ Mutexe, tried it, didn't work, thought I was doing something wrong.