Help with a do loop in c++

[thesis99]

I have an assignment for my class to create a table of volumes ina sphere. Starting with 5cm end w/50cm increments of 5. I feel I am very close but I can't get it to compile. here is what I have. Any help would be great.
[code=cpp]
#include <iostream>
#include <iomanip>

int main()
{
int i= 5; //radius of sphere
float x= (4.);
float b= (3.14);
float c= (4.0/3.0);
float y=0;// area
float z=0;// volume

{
do

cout<< setw (5) << i << setw (5) << y << set(5) << z <<endl;
<snipped>
}
while (i<=50);
cout<<"out of loop"<<endl;
return(0);
}
[/code]

[debasisdas]

Question moved to C / C++ forum.

[Ganon11]

Well, your opening brace of the loop is before your do statement. That makes no sense. Do what? The whole point of the braces is to enclose the body of the loop, so you are 'do'-ing that set of statements.

Also, you are printing y and z before you get their values within the loop. Do your calculation first, then print them.

[Banfa]

You have forgotten to declare your namespace


Also note we do not allow posting of complete code solutions to coursework questions so I have snipped a chunk from your code.

Add 3.14 is a double constant but you are assigning to a variable of type float. If you are going to do floating point arithmetic the is no real reason on todays computers not to use a double types but if you are going to use floats then declare your constants with float type 3.14F

[thesis99]

Im still lost,


I have:
[code=cpp]
do
{

my equation

cout<< setw (5) << i << setw (5) << y << set(5) << z <<endl;
i+=5;
}


while(i<=50);
[/code]
MY COMPILIER DOES NOT LIKE THE COUT<<

[Ganon11]

Try typing "using namespace std;" right after your #include statements, or referring to cout as std::cout.

[thesis99]

Try typing "using namespace std;" right after your #include statements, or referring to cout as std::cout.

THAT DOES NOT SEEM WORK. IM STILL GETTING THE COUT<< HIGHLIGHTED ON MY COMPILIER.

THIS KIND OF THING DRIVES A BEGINNER MAD!!!!!

[thesis99]

this is what i have:
[code=cpp]
#include <iostream>
#include <iomanip>

using namespace std;

int main()

{
int i= 5; //radius of sphere
float x= (4.);
float b= (3.14F);
float c= (4.0/3.0);
float y=0;
float z=0;


do
{
<SNIPPED>
y= i*(x*b)*2*2;
z= i*(c*b)*3*3*3;
cout<< setw (5) << i << setw (5) << y << set(5) << z <<endl;
i+=5;

}

while(i<=50);



cout<<"out of loop"<<endl;


return(0);
}[/code]

[sicarie]

What's snipped above the cout statement in the loop? What did you leave out?

[sicarie]

thesis99-

Please check your Private Messages, accessible via the PMs link in the top right corner of your page.

Thanks

sicarie

[thesis99]

What's snipped above the cout statement in the loop? What did you leave out?

jUST some calculations. Didn;t want to post the whole program. I was informed we are not to do that anymore.

[sicarie]

Can I see the two lines above that?

[thesis99]

Can I see the two lines above that?

sure;
y= i*(x*b)*2*2;
z= i*(c*b)*3*3*3;

[sicarie]

sure;
y= i*(x*b)*2*2;
z= i*(c*b)*3*3*3;

Hmmm, try putting a space between 'cout' and '<<'.

[thesis99]

Hmmm, try putting a space between 'cout' and '<<'.

That didn't work! Am I completley off track with the program.