noobie loop question

**sandingman1** · 12-24-2005

i get alot of ; expected before ) or )expected before ; errors when i try to compile this code, i am using bloodshed dev-c++ compiler. this is just me practicing what i have learnt while reading the tutorials

Code:

 #include <iostream>

using namespace std;

int main()
{
  int x,y;
  cout<<"input X\n"; 
  cin>> x;
  cout<<"x will be modified by this variable, (y)\n";
  cin>>y;
  do (
    x = x + y; /*error in this line, "expected ')' before ';' token */
    x++;
    cout<< x<<"\n";
    cin.ignore();
    )
  while (x < 10)
  cin.get();
  }

**adr** · 12-24-2005

Hi I think I know whats wrong with it. Change the ( after the do to { and the same thing at the other ) should be }

Code:

 #include <iostream>

using namespace std;

int main()
{
  int x,y,e;
  cout<<"input X\n"; 
  cin>> x;
  cout<<"x will be modified by this variable, (y)\n";
  cin>>y;
  do{ 
    e = x+y;
    x++;
    cout << "answer = " << e<<endl;
    }
  while (x < 10);
  cin.get();
}

Sorry I change the code a little^^; but its the same as yours anyways. Just change the "Do" () to {} and it should be ok.

**sandingman1** · 12-24-2005

thank you! it works now, but what does endl do? i didnt understand that when the tutorial explained it, so i kinda coded around it.

**adr** · 12-24-2005

Its the same as

Code:

<<"\n";

just spelled out. It ends the line.

**sandingman1** · 12-24-2005

thanks again

**Dave_Sinkula** · 12-24-2005

http://www.parashift.com/c++-faq-lit....html#faq-15.7

**adr** · 12-24-2005

But I dont think new use really need to know that yet really. Not till you use bigger programing. + Thats new to meXD I was showed to always use that befor the end if you get a int like that.

**Dave_Sinkula** · 12-24-2005

Originally Posted by adr

But I dont think new use really need to know that yet really. Not till you use bigger programing. + Thats new to meXD I was showed to always use that befor the end if you get a int like that.

Is there a bablefish that can tell me what this means?

**Dae** · 12-24-2005

Originally Posted by Dave_Sinkula

Is there a bablefish that can tell me what this means?

Haha.

adr, I don't see how endl is worse than "\n". endl implies.. oh I don't know, end line. What the hell is a backslash and one character imply? nothing, its only known because the newbie is taught it. Doesn't matter which is taught first really...

**adr** · 12-24-2005

HuhO.O never said it was a bad thing. I just said that new users dont need to know that just right off yet

Just makes things a little weird. I know it doesnt matter really, but just to make things a little easyer on ppl its better to do things they know how and teach them something differnt on the way:P

**dwks** · 12-24-2005

I use endl instead of '\n' if it's after a variable or something . . . but I don't see the point in using it like this:

Code:

cout << "hello" << endl;

**sean** · 12-24-2005

endl inserts a newline character AND flushes the stream.

**dwks** · 12-24-2005

I knew someone was going to say that.

Yes, if you want to flush the stream as well, then use endl.

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