New to C++ and need some help

This is my first program ever and I am having some problems with it.

http://pic9.picturetrail.com/VOL298/...4/82904752.jpg

Here is what I have come up with so far.

Code:

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#inlcude<iostream>
#include<math.h>

int main()
{
float i;
double x, term, sum;

cout <<"enter a value for x"<<endl;
cin>>x;

for(i= 0.1; i<=1.0; i=i+0.05)

need more code

return 0;
}

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Thats basically as far as I get.

In the examples I have they use

Code:

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"double x,xi,xe,dx,term,sum,ex;"
xi=0.1; xe=1.0; dx=0.05

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instead of how I did it above,
then they specify

Code:

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for(x=xi; x<=xe; x=x+dx)

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Is that the same as how I did it?

Thanks for any help or suggestions in advance.

Add code tags.

Quote:

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Originally Posted by Shakti

Add code tags.

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how do you do that? I have never posted code before.

http://cboard.cprogramming.com/showthread.php?t=13473
And go read the announcment after you have read that.

That better?

Yah.

Now, exactly what is it you have trouble with??

Quote:

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That better?

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Yes. But not perfect ;) Don't forget to indent your code. One of the features od the code tags is preserving all your spacing.

As for your question, they do appear to be the same.

Quote:

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Originally Posted by sean_mackrory

Yes. But not perfect ;) Don't forget to indent your code. One of the features od the code tags is preserving all your spacing.

As for your question, they do appear to be the same.

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oh I typed this up right on the forum and it wouldnt let me tab over.

as for my question. I am having problems coming up with what code should come next.

I was thinking it should be something along the lines of

Code:

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term=term*(multiplication factor)
sum=sum+0.05

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Also what code would be put to specify 6 decimal places? I used float i;

Quote:

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oh I typed this up right on the forum and it wouldnt let me tab over.

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You can't use tab in a most web browser's. And ideally you shouldn't copy and paste code that has tabs in it either. Use spaces (4 perhaps) instead.

edit: There's a function you can use to set how many decimal places. It's something like setprecision(). It's a member function of I/O streams, so you'd say something like

Code:

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cout.setprecision(6);

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But I'm not positive on the function name.

the setpercision should be in the code before the function correct.
Like put it in after

Code:

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double x,term,sum;

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Quote:

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Originally Posted by zombie

the setpercision should be in the code before the function correct.
Like put it in after

Code:

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double x,term,sum;

---

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Not neccesarily. You could print it out and such. Try printing it out with cout inside your for loop (if that's where you want it to print...of whatever you're trying to do here.) >_<

std::cout << setprecision(XX);

Where XX is a number of how many decimals you want to go out to.