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Losplagos
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 Posted: Tue May 15, 2007 2:36 am Post subject: My first c++ program |
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I'm Pyro the Noob and this is my first c++ program i have made by myself no book giving me source code. I might of messed up the gravitational formula.
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Earthbound = 31337 |
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kennny2004
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| Posted: Tue May 15, 2007 3:23 pm Post subject: |
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what it does, not up for getting more staff on my desktop lol mabie post the source
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Losplagos
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| Posted: Tue May 15, 2007 7:37 pm Post subject: |
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| Code: | #include <cstdio>
#include <cstdlib>
#include <iostream>
using namespace std;
int main(int nNumberofArgs, char* pszArgs[])
{
// declaring variables
double M1;
double M2;
double Distance;
double G;
double Answer;
int Filler;
//The messages and storing variables
cout << "What is the First objects mass: ";
cin >> M1;
cout << "What is the second objects mass: ";
cin >> M2;
cout << "What is the distance between the centers of gravity of the two objects: ";
cin >> Distance;
//Here im doing the math
Answer =(G * M1 * M2)/(Distance * Distance);
G = 6.67300;
//And now i print the answer
cout << "The answer is: " << Answer << endl;
cout << "This program was made by " << "Pyro";
cin >> Filler;
return 0;
}
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It is a simple program for gravitational force calculation I hope I set up the math correctly.
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DeltaFlyer
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| Posted: Tue May 15, 2007 8:33 pm Post subject: |
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You probably should set the constant G before you use it.
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zomg l33t hax at this place (IE only). Over 150 people have used it, what are YOU waiting for? |
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Losplagos
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| Posted: Wed May 16, 2007 12:50 am Post subject: |
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Alright i fixed my code so it should actually work now.
Here is my source code.
| Code: | #include <cstdio>
#include <cstdlib>
#include <iostream>
using namespace std;
int main(int nNumberofArgs, char* pszArgs[])
{
// declaring variables
double dM1;
double dM2;
double dDistance;
double dAnswer;
double dFiller;
double dG;
double dA;
double dB;
// The constant for gravity
dG = 6.673;
//The messages and storing variables
cout << "What is the First objects mass: ";
cin >> dM1;
cout << "What is the second objects mass: ";
cin >> dM2;
cout << "What is the distance between the centers of gravity of the two objects: ";
cin >> dDistance;
//Here im doing the math
dA = dDistance * dDistance;
dB = dG * dM1 * dM2;
dAnswer = dB/dA;
//And now i print the answer
cout << "The answer is: " << dAnswer << endl;
cout << "This program was made by " << "Me";
cin >> dFiller;
return 0;
}
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Earthbound = 31337 |
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TheSorc3r3r
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| Posted: Wed May 16, 2007 4:40 am Post subject: |
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Here's a revised version (although I don't think that formula/constant is right.. what do I know!? I just learned Inertia  )
| Code: | #include <iostream>
using namespace std;
#define GRAVITY 6.673
int main()
{
double mass1 = 0, mass2 = 0, distance = 0;
cout << "GravityCalculator\nby LosPlagos"
<< "\n\nEnter the first object's mass: ";
cin >> mass1;
cout << "\nEnter the second object's mass: ";
cin >> mass2;
cout << "\nEnter the distance between each objects' center of gravity: ";
cin >> distance;
if (!(mass1 & mass2 & distance))
{
cout << "\nError: You didn't enter something correctly."
return 1;
}
cout << "\nAnswer is: " << (GRAVITY * mass1 * mass2)/(distance) << endl;
return 1;
} |
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Last edited by TheSorc3r3r on Wed May 16, 2007 7:15 pm; edited 1 time in total |
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Losplagos
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| Posted: Wed May 16, 2007 4:46 am Post subject: |
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The gravatational constant is probly wrong since i did it all from memory.
Also i just started learning if commands.
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D@ntheman
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| Posted: Wed May 16, 2007 9:00 am Post subject: |
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Thats a fine looking program you've made ther.
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the_undead
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| Posted: Wed May 16, 2007 9:07 am Post subject: |
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Dont make gravity a constant concidering some of us use 9.98m/s^2 as the value.
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Flyte
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| Posted: Wed May 16, 2007 10:10 am Post subject: |
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| the_undead wrote: | | Dont make gravity a constant concidering some of us use 9.98m/s^2 as the value. |
The gravitaional constant (G) is 6.67e-11.
9.81m/s^2 is the acceleration caused by Earth's gravity.
Also:
Your formula is incorrect.
Fg = (G(m1)(m2))/(R^2) Is the correct one.
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Losplagos
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| Posted: Wed May 16, 2007 6:44 pm Post subject: |
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| Flyte wrote: | | the_undead wrote: | | Dont make gravity a constant concidering some of us use 9.98m/s^2 as the value. |
The gravitaional constant (G) is 6.67e-11.
9.81m/s^2 is the acceleration caused by Earth's gravity.
Also:
Your formula is incorrect.
Fg = (G(m1)(m2))/(R^2) Is the correct one. |
Could you explain what r^2 is since the formula I remember is g*m1*m2/d^2 and is what I used. The current formula im using has these lines of code now.
| Code: |
dG = 6.67e-11;
dA = dDistance*dDistance;
dB = dG * dM1 * dM2;
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Flyte
Peanuts!!!!
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| Posted: Thu May 17, 2007 2:55 pm Post subject: |
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| Losplagos wrote: | | Flyte wrote: | | the_undead wrote: | | Dont make gravity a constant concidering some of us use 9.98m/s^2 as the value. |
The gravitaional constant (G) is 6.67e-11.
9.81m/s^2 is the acceleration caused by Earth's gravity.
Also:
Your formula is incorrect.
Fg = (G(m1)(m2))/(R^2) Is the correct one. |
Could you explain what r^2 is since the formula I remember is g*m1*m2/d^2 and is what I used. The current formula im using has these lines of code now.
| Code: |
dG = 6.67e-11;
dA = dDistance*dDistance;
dB = dG * dM1 * dM2;
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Sorry, I didn't notice that you did square the radius in the code by multiplying.
R and d are the same, just different variables.
R (Radius)
d (distance)
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krndandaman
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| Posted: Thu May 17, 2007 5:12 pm Post subject: |
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How'd you learn this?
Its a cool program.
From highschool class?
If its from a webtut, could you PM me a link?
If you could, that'd be great.
thanks in advance!
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Losplagos
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| Posted: Thu May 17, 2007 7:15 pm Post subject: |
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No class just what i have learned so far all I have used to make this you could learn in a day of c++ learning you could do the same.
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Earthbound = 31337 |
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