C++ :: Add And Minus From Text File Not Giving Right Value
Feb 5, 2014
I'm creating a bank system. So I know to make a deposit to the balance, which add ups what is the balance to i have add.
When i run the deposit function, its work well in some ways. If balance(text file) has the value 10, add i addSum 20, the balance will become 30, same as the text file will become 30. so its work well to add positive number.
double deposit(double balance){
double addSum = 0;
system("CLS");
cout<< "Welcome to deposit."<<endl;
cout<<"Enter a sum you wish to add to your account:";
[Code] .......
When I withdraw from 30 which is the balance, then i takeSum, for example i take away 30. The balance will become 30 - 30 = 0
When i make another withdraw from example -150, it will be -150.
Which shows correct.
But when i make a deposit from -150 and i addSum 130, the balance shows -500, and it should had been -20.
double withdraw(double balance) {
double takeSum = 0;
system("CLS");
cout<< "Welcome to withdraw."<<endl;
cout<<"Enter a sum you wish to take away from your account:";
cout << balance << '
[Code] .....
What is causing this problem, also when function deposit and withdraw close, it goes to readBalance function, should go to menu.
double readBalance(double balance) {
int option;
system("CLS");
cout<<"Welcome to balance."<<endl;
cout<<"Your balance is:"<<endl;
So I know to make a deposit to the balance, which add ups what is the balance to i have add.
When i run the deposit function, its work well in some ways. If balance(text file) has the value 10, add i addSum 20, the balance will become 30, same as the text file will become 30. so its work well to add positive number.
Code: double deposit(double balance) { double addSum = 0; system("CLS"); cout<< "Welcome to deposit."<<endl; cout<<"Enter a sum you wish to add to your account:";
[code]...
When I withdraw from 30 which is the balance, then i takeSum, for example i take away 30. The balance will become 30 - 30 = 0 When i make another withdraw from example -150, it will be -150.Which shows correct.
But when i make a deposit from -150 and i addSum 130, the balance shows -500, and it should had been -20.
Code: double withdraw(double balance) { double takeSum = 0; system("CLS"); cout<< "Welcome to withdraw."<<endl; cout<<"Enter a sum you wish to take away from your account:";
I have written my program and it works when I keep everything in the header files, and then have my main. I am now splitting them up into implementation files, but Eclipse keeps giving me errors. It gives me error at every opening brace of the constructor and functions. It says on all of them "Redefinition of (name of constructor or method), Previously declared here." What am I doing wrong, because it works in the header file?
Is there a simple notation to check if a value is within a plus or minus range?
E.g. //I read a value A. delay(50); //Read value again -calling this value B delay(50); //Read value again -calling this value C delay(50); //Read value again -calling this value D delay(50); //Read value again -calling this value E Check IF first value A is within 5 of the value B and within 5 of value C, etc.
I can think of a few round about ways of doing this but is there any simple "equals to plus or minus" notation? (what I actually want to do is to check a lot more values than this and it will get very complicated with any of my solutions)....
T minus 10 and counting T minus 9 and counting T minus 8 and counting T minus 7 and counting T minus 6 and counting T minus 5 and counting T minus 4 and counting T minus 3 and counting T minus 2 and counting T minus 1 and counting
Declare the following index before the while loop:
int index = 10;
Correctly code a while statement below using the variable index as defined above, to produce the output shown above.
So this is what my code looks like... I also have to convert this same loop into a do while and for loop. So if I can get this one right I think the others should come relatively easy.
while (int index >= 10) { cout << "T minus " << index; index--; }
I have same question as posted by holla and Iam not sure about merging the contents of 2 sorted arrays into another array without duplication of values.
I want to make a program that opens a text file and checks the usernames listed in the text files to see if the names are registered on a site such as twitter. How easy would this be to make, what things would I need to know?
I want to extract Text1, Text2, Text3, Text4,..., Text600 in the output file. How can i achieve this?
/* BTW, I am not getting my homework done here. I am an ex-programmer, who has now moved to marketing for some time now, and today, I encountered this problem, which I believe can be solved easily through programming. */
i want to create 100 gmail accounts instantaneously....what i want from you guys is i have written a program that create a text file i want that once i give the program the imput of 1 it should delete the first 3 lines from the file i.e. the first account details coz that is already been created and shift the rest of it 3 lines upwards after that i'll write a javascript that will automatically fill and create the accounts with those names in web browser.....my lil program is here:
I'm writing a program to calculate a final grade by adding 4 numbers minus the lowest grade and dividing by 3. My knowledge in c is not extensive I thought that a simple assigment operator would do the job but I'm getting a strange large numbers in the execution.
I have programmed a game where you guess a number (1-6) and if the number is equal to the random number then give the player score + 10. But if I have selected for example 4 players then if the game will give player 1 a score it gives player 2 a score instead? What can be causing this error?
Code: #include <iostream> #include <cstdlib> #include <ctime> using namespace std; int cube; int number[4];
I want to give audio-input to a FFT code (KissFFT) written in C, on a real-time basis. While I can give a simple test signal (like sine wave) by writing the sine function as input, I am not sure how I should convert an audio-signal (e.g.: song) into a form that can be taken as input by the KissFFT C code.
The program should ask the user how many students were surveyed and dynamically allocate an array of that size. The program should then allow the user to enter the number of movies each student has seen.
#include <iostream> #include <string> using namespace std;
[Code].....
The problem I'm having is that where I declare movies = [numStudents]; the semicolon after the numStudents array is giving me this error - "error: expected a '{' introducing a lambda body".
Not a major issue since I got this to work but for some reason both my random numbers are the same and not sure why ...
using System; using System.Collections.Generic; using System.Linq; using System.Text; public class ComputerAssistedInstructions { private static Random rand1 = new Random(); private static Random rand2 = new Random();
Im using the remquo function in the cmath library as follows:
int quotient; double a = remquo (10.3, 4.5, "ient);
This gives the correct remainder (a = 1.3) and quotient (quotient = 2).
Infact about 50% of the answers are right when I play around, however, trying something like:
int quotient; double a = remquo (2.25, 1.5, "ient);
yields an incorrect quotient of 2 and remainder of 0.
I do think this has something to do with float arithmetic. I recall tinkering with the float number 0.500 and that the CPU actually saves it as 0.50000000000000231. However if my suspicion of float arithmetic as the suspect is correct, I do not understand why a tenth decimal would make such a drastic difference as changing the quotient result.
I'm using Code:Blocks 12.11 on windows 7, with the built-in MinGW compiler. When I try and compile a program that has an error in it (misnamed variable, missing include, extra semi-colon somewhere, anything) instead of saying something about what went wrong it just has this:
Process terminated with status 1 (0 minutes, 0 seconds) 0 errors, 0 warnings (0 minutes, 0 seconds)
when I want to use the same socket connected to the host to send() and recv() for the second time, recv() will return 0 without anything in buffer. Basically I am doing:
1. connect to the website 2. send packets 3. receive packets 4. send packets again (I think this one is working since it's not giving me SOCKET_ERROR) 5. receive packets again (this one is returning 0 so as "connection closed")
source code: [URL] ....
as you can see, I have sock2, which when I use for second send/recv it's working fine, however I will do more communication, and having sockets for all of that and connecting them.
I am trying to retrieve information from a website [URL] .... and have written a C code as follows:
Code: #include <stdlib.h>#include <stdio.h> #include <string.h> #include <curl/curl.h> int main(int argc, char* argv[]) { /* Exit status to return */ int exitStatus = 0;
[Code] .....
The output of this program should be: From To 4504111 B0LPF3 4504111 P62993
The first print option [printf("%s", url)] gives the url output as [URL] .... which on being manually pasted in any web-browser gives the correct output but the program fails to give the output.
I'm making a game with the following class structure:
GameControl - The class that actually runs the game, with a while(!closed) // run the game loop.
State - A class that handles the state of the game, for example if the game is rendering the scene it would be in one state, and if it is rendering the menu, it would be in another.
ComponentManager - A class that manages all of the components of what is being done, for instance, the Scene class would contain a bunch of components handling the drawing of each tree, physics, the camera, etc. The manager will put them all together.
Component - A component of whatever is being done. A tree (and its rendering code) would be an example of a component of the scene. The camera would be another. The component does not necessarily have to be drawn, it could be handling something like physics (and would throw physics events to other components that need to move in a certain way).
The GameControl class has its loop, which would call the update function on the current State (there are classes that inherit State and override the update function of State).
In the update function of the base class "State", it would take all of the active ComponentManagers and update them. There are classes that inherit the base class ComponentManager and override its update function.
Each ComponentManager would update each of the Components that it owns.
This is the organizational structure that I came up with to make the game scalable and changeable . If, for instance, I wanted to add multiplayer at some point, I would add a class that inherits the State that controls the gameplay called "MultiplayerGameState". This would just add a new ComponentManager that inherits the ComponentManager that controls the player and all of the living things that are moving around. Then, the MultiplayerGameState class would recieve the multiplayer messages coming in and add other player Components for the other players.
My code is giving me various errors like "Forward definition of class State" and "Invalid use of incomplete type State". Unless I made some stupid error that I didn't catch, these are being caused by me including the classes in ways that some of the classes do not see the full definitions of the classes they need to see (because of the preprocessor directives preventing classes from being included multiple times.
Code: (Not implemented exactly as shown above, but I think the main difference is that the main class is not in GameControl, it's in OgreFramework.cpp)
The base classes: [URL] ... States: [URL] ... ComponentManagers: [URL] ... Components: [URL] ... The project: [URL] ...
My question is: is there a better way to implement my organizational system so that these errors don't occur?
I've implemented the merge sort algorithm and used the 'merge' part for counting the number of split-inversions in an array as part of an assignment for an online course. How ever, the out put array is not a sorted version of the input array and as a result the number of split inversions obtained is wrong. I think that there is some thing wrong in the way I am indexing arrays.
I've used ' cout ' to print the values of indexes to see exactly what values are being passed in during the recursions.
Code:
#include <iostream> using namespace std; int length=0,mid=0,inv=0; void mergesort(int arr[], int first, int last) { cout << "first: " << first << " " << "last: " << last; cout << endl;
I have been looking and i'm stuck on this. I wrote this program to find quarks and their charge and mass but i need it to give me 5 different ones. so i made an array but when i run it it gives me this
"Unhandled exception at 0x001631c6 in DiasQuarkP1V0.exe: 0xC0000005: Access violation reading location 0xd5bf0c38." and it shows the xstring library.
this is my main, is their anything wrong with my code?
#include "StdAfx.h" #include <stdio.h> #include <string> using namespace std; int main() { Quark solution[5]={};
