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I Learn Some Basic C++! [message #391886] Tue, 23 June 2009 01:01 Go to next message
_SSnipe_ is currently offline  _SSnipe_
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Lol this is very very very simple stuff to you guys but after reading on in my c++ book (c++ without fear referred to me by reborn) I made a simple console command prompt that what ever number you type in gets multiply by 100! lol nothing special but im happy im learning something

#include "stdafx.h"
#include <iostream>
using namespace std;

int main() {
	double x;
	cout << "Enter Number Here To Be Multiplied By 100: ";
	cin >> x;
    cout << "The Output Is: " << 100 * x;
	return 0;
}
Re: I Learn Some Basic C++! [message #391929 is a reply to message #391886] Tue, 23 June 2009 07:46 Go to previous messageGo to next message
Nightma12 is currently offline  Nightma12
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good for you. Sarcasm Thumbs Up
Re: I Learn Some Basic C++! [message #391937 is a reply to message #391886] Tue, 23 June 2009 08:30 Go to previous messageGo to next message
ErroR is currently offline  ErroR
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why the sarcasm Dont Get It it's nice of him learning Smile
Re: I Learn Some Basic C++! [message #391943 is a reply to message #391886] Tue, 23 June 2009 09:12 Go to previous messageGo to next message
cnc95fan is currently offline  cnc95fan
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Now do something where I can enter in a specified amount of numbers, it adds up all those numbers and then gets multiplied by 100
Re: I Learn Some Basic C++! [message #391948 is a reply to message #391886] Tue, 23 June 2009 09:43 Go to previous messageGo to next message
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Re: I Learn Some Basic C++! [message #391960 is a reply to message #391886] Tue, 23 June 2009 12:00 Go to previous messageGo to next message
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Re: I Learn Some Basic C++! [message #391964 is a reply to message #391886] Tue, 23 June 2009 12:39 Go to previous messageGo to next message
raven
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printf + scanf > cin + cout

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[Updated on: Tue, 23 June 2009 12:40]

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Re: I Learn Some Basic C++! [message #391965 is a reply to message #391886] Tue, 23 June 2009 12:45 Go to previous messageGo to next message
reborn is currently offline  reborn
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Evolve it...

Allow people to input a multiplier (currently your multiplier is 100).
So they input x as the number they want to multiply, then y as the multiplier.
You then have a program that can times any two numbers and give you the answer.
Further on in that book just a little your learn to create your own functions and use different libraries for triangular numbers...

Nice one dude, way to go! Smile



Re: I Learn Some Basic C++! [message #391966 is a reply to message #391943] Tue, 23 June 2009 12:59 Go to previous messageGo to next message
_SSnipe_ is currently offline  _SSnipe_
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cnc95fan wrote on Tue, 23 June 2009 09:12

Now do something where I can enter in a specified amount of numbers, it adds up all those numbers and then gets multiplied by 100

I just tryed that, odd enought I can get them to all add up..and even plus another number, but wont multiply correctly for some reason
Re: I Learn Some Basic C++! [message #391971 is a reply to message #391886] Tue, 23 June 2009 13:32 Go to previous messageGo to next message
cnc95fan is currently offline  cnc95fan
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Post the code and ask for help Satisfied
Re: I Learn Some Basic C++! [message #391988 is a reply to message #391886] Tue, 23 June 2009 15:48 Go to previous messageGo to next message
_SSnipe_ is currently offline  _SSnipe_
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as i said im new and this basic stuff is all i know so far but im just guessing it but here cnc

#include "stdafx.h"
#include <iostream>
using namespace std;

int main() {
	double a, b, c, d, e;
	cout << "Enter numbers here to be added up (5 is the max) then multiplied by 100 ";
	    cin >> a;
	cout << "Enter second digits: ";
		cin >> b;
	cout << "Enter third digits: ";
		cin >> c;
	cout << "Enter fourth digits ";
		cin >> d;
	cout << "Enter fifth digits: ";
		cin >> e;
    cout << "The Output Is: " << 100 * a + b + c + d + e;
	return 0;
}

Re: I Learn Some Basic C++! [message #391994 is a reply to message #391964] Tue, 23 June 2009 16:47 Go to previous messageGo to next message
Sir Kane
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raven wrote on Tue, 23 June 2009 14:39


Quote:

Quote:

Quote:

Quote:

printf + scanf > cin + cout








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Re: I Learn Some Basic C++! [message #391996 is a reply to message #391988] Tue, 23 June 2009 17:00 Go to previous messageGo to next message
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SSnipe wrote on Wed, 24 June 2009 06:48

as i said im new and this basic stuff is all i know so far but im just guessing it but here cnc

#include "stdafx.h"
#include <iostream>
using namespace std;

int main() {
	double a, b, c, d, e;
	cout << "Enter numbers here to be added up (5 is the max) then multiplied by 100 ";
	    cin >> a;
	cout << "Enter second digits: ";
		cin >> b;
	cout << "Enter third digits: ";
		cin >> c;
	cout << "Enter fourth digits ";
		cin >> d;
	cout << "Enter fifth digits: ";
		cin >> e;
    cout << "The Output Is: " << 100 * a + b + c + d + e;
	return 0;
}




Order of operations, what happens here is that a is multiplied by 100 and then added together with b, c, d and e. What you need is to bracket up a+b+c+d+e.
cout << "The Output Is: " << 100 * (a + b + c + d + e);




nopol10=Nopol=nopol(GSA)

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Re: I Learn Some Basic C++! [message #391998 is a reply to message #391886] Tue, 23 June 2009 17:01 Go to previous messageGo to next message
cnc95fan is currently offline  cnc95fan
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Nvm

[Updated on: Tue, 23 June 2009 17:02]

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Re: I Learn Some Basic C++! [message #392003 is a reply to message #391996] Tue, 23 June 2009 18:04 Go to previous messageGo to next message
_SSnipe_ is currently offline  _SSnipe_
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nopol10 wrote on Tue, 23 June 2009 17:00

SSnipe wrote on Wed, 24 June 2009 06:48

as i said im new and this basic stuff is all i know so far but im just guessing it but here cnc

#include "stdafx.h"
#include <iostream>
using namespace std;

int main() {
	double a, b, c, d, e;
	cout << "Enter numbers here to be added up (5 is the max) then multiplied by 100 ";
	    cin >> a;
	cout << "Enter second digits: ";
		cin >> b;
	cout << "Enter third digits: ";
		cin >> c;
	cout << "Enter fourth digits ";
		cin >> d;
	cout << "Enter fifth digits: ";
		cin >> e;
    cout << "The Output Is: " << 100 * a + b + c + d + e;
	return 0;
}




Order of operations, what happens here is that a is multiplied by 100 and then added together with b, c, d and e. What you need is to bracket up a+b+c+d+e.
cout << "The Output Is: " << 100 * (a + b + c + d + e);




OO so simple, so do you always got to put those variables in brackest when theres mroe then one? or always?
Re: I Learn Some Basic C++! [message #392004 is a reply to message #391886] Tue, 23 June 2009 18:06 Go to previous messageGo to next message
raven
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It's not just that there's multiple variables. It's that you have to follow the order of operations when doing any mathematical calculation, and brackets are part of said order of operations

BEDMAS - Brackets/Exponents/Division/Multiplication/Addition/Subtraction


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Re: I Learn Some Basic C++! [message #392008 is a reply to message #392004] Tue, 23 June 2009 18:27 Go to previous messageGo to next message
_SSnipe_ is currently offline  _SSnipe_
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raven wrote on Tue, 23 June 2009 18:06

It's not just that there's multiple variables. It's that you have to follow the order of operations when doing any mathematical calculation, and brackets are part of said order of operations

BEDMAS - Brackets/Exponents/Division/Multiplication/Addition/Subtraction

ok that makes since thanks for that tip
Re: I Learn Some Basic C++! [message #392031 is a reply to message #392003] Wed, 24 June 2009 00:51 Go to previous messageGo to next message
Omar007 is currently offline  Omar007
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SSnipe wrote on Wed, 24 June 2009 03:04

nopol10 wrote on Tue, 23 June 2009 17:00

SSnipe wrote on Wed, 24 June 2009 06:48

as i said im new and this basic stuff is all i know so far but im just guessing it but here cnc

#include "stdafx.h"
#include <iostream>
using namespace std;

int main() {
	double a, b, c, d, e;
	cout << "Enter numbers here to be added up (5 is the max) then multiplied by 100 ";
	    cin >> a;
	cout << "Enter second digits: ";
		cin >> b;
	cout << "Enter third digits: ";
		cin >> c;
	cout << "Enter fourth digits ";
		cin >> d;
	cout << "Enter fifth digits: ";
		cin >> e;
    cout << "The Output Is: " << 100 * a + b + c + d + e;
	return 0;
}




Order of operations, what happens here is that a is multiplied by 100 and then added together with b, c, d and e. What you need is to bracket up a+b+c+d+e.
cout << "The Output Is: " << 100 * (a + b + c + d + e);




OO so simple, so do you always got to put those variables in brackest when theres mroe then one? or always?

I Would also suggest to make a loop instead of using 5 doubles.
Something like this:
#include "stdafx.h"
#include <iostream>
using namespace std;

int main()
{
     double n, t; //n = number filled in, t = total counter
     cout << "Please enter 5 numbers seperated by a space";

     for(int i=0; i<5; i++) //To increase the number of numbers you can fill in you just have to replace the 5 to another number so you dont have to copy/paste again for every new number
     {
     cin >> n;
     t =+ n;
     }

     cout << "The output is: " << 100*t;
     return 0;
}


EDIT: Havent tested it but wrote it out of my mind but you'll get the idea right???


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[Updated on: Wed, 24 June 2009 00:53]

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Re: I Learn Some Basic C++! [message #392062 is a reply to message #392003] Wed, 24 June 2009 10:00 Go to previous messageGo to next message
jnz is currently offline  jnz
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SSnipe wrote on Wed, 24 June 2009 02:04

nopol10 wrote on Tue, 23 June 2009 17:00

SSnipe wrote on Wed, 24 June 2009 06:48

as i said im new and this basic stuff is all i know so far but im just guessing it but here cnc

#include "stdafx.h"
#include <iostream>
using namespace std;

int main() {
	double a, b, c, d, e;
	cout << "Enter numbers here to be added up (5 is the max) then multiplied by 100 ";
	    cin >> a;
	cout << "Enter second digits: ";
		cin >> b;
	cout << "Enter third digits: ";
		cin >> c;
	cout << "Enter fourth digits ";
		cin >> d;
	cout << "Enter fifth digits: ";
		cin >> e;
    cout << "The Output Is: " << 100 * a + b + c + d + e;
	return 0;
}




Order of operations, what happens here is that a is multiplied by 100 and then added together with b, c, d and e. What you need is to bracket up a+b+c+d+e.
cout << "The Output Is: " << 100 * (a + b + c + d + e);




OO so simple, so do you always got to put those variables in brackest when theres mroe then one? or always?


Read up on BODMAS (or BADMAS).
Re: I Learn Some Basic C++! [message #392127 is a reply to message #392062] Wed, 24 June 2009 18:23 Go to previous messageGo to next message
YazooGang is currently offline  YazooGang
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BUG, BUG, BUG!
Ok, i tried it out and when i need to get the answer, the window closes. I fixed it but fix it your own for your learning. lol
Re: I Learn Some Basic C++! [message #392129 is a reply to message #392127] Wed, 24 June 2009 18:37 Go to previous messageGo to next message
_SSnipe_ is currently offline  _SSnipe_
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YazooGang wrote on Wed, 24 June 2009 18:23

BUG, BUG, BUG!
Ok, i tried it out and when i need to get the answer, the window closes. I fixed it but fix it your own for your learning. lol

Lol, ya I know it runs when you do ctrl+F5 in visual c++ but when you click and run program in folder...closes
Re: I Learn Some Basic C++! [message #392156 is a reply to message #391886] Wed, 24 June 2009 21:52 Go to previous messageGo to next message
dr3w2 is currently offline  dr3w2
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erm BEDMAS?

Brackets
Exponents
Division
Multiplication
Addition
Subtraction


top to bottom, that's like grade 9 math ...

All languages follow this.. just like your calculator

5*5+2 = 27
5*(5+2) = 35



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[Updated on: Wed, 24 June 2009 21:56]

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Re: I Learn Some Basic C++! [message #392157 is a reply to message #392156] Wed, 24 June 2009 22:14 Go to previous messageGo to next message
_SSnipe_ is currently offline  _SSnipe_
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andr3w282 wrote on Wed, 24 June 2009 21:52

erm BEDMAS?

Brackets
Exponents
Division
Multiplication
Addition
Subtraction


top to bottom, that's like grade 9 math ...

All languages follow this.. just like your calculator

5*5+2 = 27
5*(5+2) = 35



How would i write thme out in c++? as in how do i knwo which go in abckets and which can i place next to each other?
for example

4 * x (1 + 2) lets pretend thios si teh rite way to write it
how would i know that?a and end up like

1 + 2 (4 * x0 or something..its hard for me to explain

or maybe even

10 * x + 5

[Updated on: Wed, 24 June 2009 22:16]

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Re: I Learn Some Basic C++! [message #392159 is a reply to message #392157] Wed, 24 June 2009 23:35 Go to previous messageGo to next message
jnz is currently offline  jnz
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andr3w282 wrote on Wed, 24 June 2009 21:52

erm BEDMAS?


BODMAS where I come from Razz

SSnipe wrote on Thu, 25 June 2009 06:14


4 * x (1 + 2)


int x = 10;
cout << 4 * x * (1 + 2) << endl; //120


SSnipe wrote on Thu, 25 June 2009 06:14


1 + 2 (4 * x0


int x = 10;
cout << 1 + 2 * (4 * x * 0) << endl; //1 


SSnipe wrote on Thu, 25 June 2009 06:14


10 * x + 5


int x = 10;
cout << 10 * x + 5 << endl; //105
Re: I Learn Some Basic C++! [message #392270 is a reply to message #391886] Thu, 25 June 2009 14:19 Go to previous messageGo to previous message
_SSnipe_ is currently offline  _SSnipe_
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What I mean is how do you know there to put the variable, and then the other numbers, and which ones go inside ther brackets
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