#include "stdafx.h" #include <iostream> #include <iomanip> #define PI 3.14159 #define g 9.81 using namespace std; int main() { double Volume,SurfaceArea,Circumference,Area,Sum, Base; double Length,Width,Height,SlantHeight,Radius,Value; int F,K,C; // temperatures double Number, a, l; double P,V,R,T Base = 10; // This is the base of the triangle Height = 3; Area = 1 * Base * Height / 2; cout << "\n\t\tThe Area of this beautiful triangle = " << Area; //Volume of Sphere Radius = 6; Height = 3; Volume = 4/3 * PI * Radius * Radius; cout << "\n\t\t The volume of this cone = " << Volume; //The Sum Number = 4; a = 1; l = 7; Sum = Number/2 * (a+l); cout<<"\n\n\n The Sum of this sum = " << Sum; // Lateral Area of Cone Radius = 3; SlantHeight = 4; Area = PI * Radius * SlantHeight * 1/2; cout<<"\n\n\n The Area of this = " << Area; //Celcius C = 100; cout << "\n\t\tThe value of 5 / 9 * (F - 32) = " << 5/9* (F - 32) << " Farenheit"; //Farenheit F = 150; cout <<"\n\t\tThe value of 9 / 5 * C + 32 = " << 9/5 * C + 32 <<" Celcius "; // I don't know P = 3; V = 6; R = 2; T = 7; Number = P*V/T*R; cout<<"\n\n\t The value of P * V/ T* R = " << Value; cout << "\n\n\n"; return 0; }

# Formula Error

Page 1 of 1## 2 Replies - 592 Views - Last Post: 10 February 2013 - 10:15 PM

### #1

# Formula Error

Posted 08 February 2013 - 05:15 PM

=I'm not sure why my celsius,temperature and n= pv\rt arent showing up when I compile it. Instead I get this error that the variable f is being used without initial I'm not sure what to do.

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**Replies To:** Formula Error

### #2

## Re: Formula Error

Posted 08 February 2013 - 05:22 PM

Look closely at the following snippet:

Where do you assign a Value to F? Before or after you try to use it?

Also note that the following calculation is probably not producing the results you think it is:

This calculation will produce a value of 1, is that really what you want? Remember integers have no fractional parts.

Jim

//Celcius C = 100; cout << "\n\t\tThe value of 5 / 9 * (F - 32) = " << 5/9* (F - 32) << " Farenheit"; //Farenheit F = 150; cout <<"\n\t\tThe value of 9 / 5 * C + 32 = " << 9/5 * C + 32 <<" Celcius ";

Where do you assign a Value to F? Before or after you try to use it?

Also note that the following calculation is probably not producing the results you think it is:

9/5

This calculation will produce a value of 1, is that really what you want? Remember integers have no fractional parts.

Jim

### #3

## Re: Formula Error

Posted 10 February 2013 - 10:15 PM

Well, about your Pv/RT not giving the right value, it has to do with this line.

You seem to have given the variable as Value and in the previous line,

You need to change the 'Number' variable to 'Value' for the code to work.

And as for the F and C values, you need to interchange lines 53 and 48.

Also, as Jim said, 9/5 is 1 whereas you want 1.something...you need to think as to what to add to the numbers to make it return a decimal value.

regards,

Raghav

cout<<"\n\n\t The value of P * V/ T* R = " << Value;

You seem to have given the variable as Value and in the previous line,

Number = P*V/T*R;

You need to change the 'Number' variable to 'Value' for the code to work.

And as for the F and C values, you need to interchange lines 53 and 48.

Also, as Jim said, 9/5 is 1 whereas you want 1.something...you need to think as to what to add to the numbers to make it return a decimal value.

regards,

Raghav

This post has been edited by **raghav.naganathan**: 10 February 2013 - 10:19 PM

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