problem with using for loops with Dev C++

when I am trying to put a for loop in Dev C++ I can't have just the initialization as

Code:

---

(i = 1; i < 4; i++)

---

I have to use

Code:

---

int i = 1; i < 4; i++

---

small, but I'm so used to seeing it in the book that I forget it every time I write it myself.

and it's me again.

was there a question hidden in that text?

Code:

---

for(int i = 0; i != 10; i++)
{
    cout << i << endl;
}

---

oh, nm.

Or, of course:

Code:

---

int i;
for(i = 0; i != 10; i++)
{
    cout << i << endl;
}

---

:)

yeah, that's it.

the book put it that way so I just forgot it.

Using Zach's way, the variable 'i' can be used anywhere else in the main(). The other way... the variable is limited to thes scope which is the for loop.

If u're using that variable just as a counter....then i prefer ILoveVectors' way. If using the variable somewhere else, then declare the variable efore.

Quick add-on to Sridar's post:
In general, I would recommend ILV's way (I was essentially just being obnoxious with my post). However, when I have a std:: container and I will need iterators a few times (independently of each other), I will declare one and then reuse it; I do not do this with integer counters. (This probably has as much to do with keeping my lines short as it does with the fact that you don't know exactly what goes into the construction of an iterator.)

So, that was probably a useless comment, but anyway...


Cheers

Also some compilers (VC++ 6.0) incorrectly treat ILoveVector's example like Zach L.'s example, so be careful if you are on that compiler, otherwise ILoveVector's example is generally preferred.

as far as im concerned there is no prefrence between the two,
there are two diffrent things in my book.

because i would use a different one depending ont he situation.

Code:

---

for(int i = 0; i != 10; i++)
{
    cout << i << endl;
}

---

but i would do thsi if i was going to do say the following

Code:

---

int i = 0;
for(; i != 10; i++)
{
    cout << i << endl;
}
for(; i <= 20; i+=2)
{
    cout << i << endl;
}
for(; i <= 200; i+=10)
{
    cout << i << endl;
}

---

Or how about:

Code:

---

{

  int i = 0;
  for(; i != 10; i++)
  {
      cout << i << endl;
  }
  for(; i <= 20; i+=2)
  {
      cout << i << endl;
  }
  for(; i <= 200; i+=10)
  {
      cout << i << endl;
  }

}

---

Then 'i' goes out of scope after all the loops

stop it your scaring the new people... :)