C++ ::  Initializing Boost Asio Variables In State Program

May 5, 2014

I am trying to initialize this chunk of code without it starting at the main menu in my state program:

boost::asio::io_service io_service;
tcp::resolver resolver(io_service);
tcp::resolver::query query(argv[1], argv[2]);
tcp::resolver::iterator iterator = resolver.resolve(query);
chat_client c(io_service, iterator);
boost::thread t(boost::bind(&boost::asio::io_service::run, &io_service));
char line[chat_message::max_body_length + 1];

This code came from a example at the boost example list: URL.....I want the networking to start when the multiplayer state initializes. This is how my program basically looks like:

//Main.cpp
main() {
if (!quit) {
while( handleing_events ) {
CurrentState->handleEvents();

[code].....

I tried to put the stuff in extern at states.h, and initialize it at Multiplayer(), but in handleEvents & ~Multiplayer, it says "c" is not defined...

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C++ :: Can't Compile The Simplest Boost Asio Program

Feb 15, 2015

I can't compile the simplest boost asio program #include <boost/asio.hpp> int main(){}

Code Blocks 13.12 writes out message "swprintf was not declared in this scope". (within win_static_mutex.ipp file)

Visual Studio 2013 writes a lot more (within win_iocp_io_service.ip file), to begin with: "min is not a member of std" and there are a lot of errors in error.hpp file stating "WSA13 identificator is not defined" (WSA13, WSA100, WSA102 etc.)

Almost everything else from boost compiles good.

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C++ ::  initializing Variables In Program

Oct 24, 2013

I want to know how to make variables during the program. for example in a program i want to have the player be able to create their own spells or add their own weapons to the game without having to edit the source code. i use sfml 2.0

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C++ :: State The Values Of Each Int Variables After Calculation Is Performed

May 2, 2013

Question: State the values of each of these int variables after the calculation is performed. Assumed that, when each statement begins executing, all variables have the integer value 5.

a) product *= x++;

b) quotient /= ++x;

What is the answer for a and b?

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C++ :: Initializing Variables In Each Class

Sep 26, 2014

I am working on a homework assignment and have most of the program working, but when I try to compile it keeps telling me to initialize the coin variables in each class. However, they are supposed to be added then removed so I don't want to set them back to zero.

Rewrite the Purse program given in Page 35 with functions to perform insert and remove operations. The function insert (int p, int n, int d, int q) will initialize pennies, nickels, dimes and quarters. The function dollars() will return the dollars. The function remove (int p, int n, int d, int q) will subtract pennies, nickels, dimes and quarters. The function display() returns a new String to print the content of the purse with remaining pennies, nickels, dimes and quarters.

Code:
usingnamespace std;
int insert_money (int *p, int *n, int *d, int *q);
int remove_money (int *p, int *n, int *d, int *q);
int dollars();
int main()

[Code] ....

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Visual C++ :: Initializing Auto Variables - Cannot Convert Parameter

Sep 8, 2014

I am new to VC++ 2012. I have this code snippet.

Code:
auto it = query_map.find(U("callback"));

The problem is right under the dot there is a red line the error is

Error1error C2664: 'std::_Tree_iterator<_Mytree> std::_Tree<_Traits>::find(const http::uri::encoded_string &)' : cannot convert parameter 1 from 'const wchar_t [9]' to 'const http::uri::encoded_string &'d:maverickprojectsstrikeforcesrcserverserverserver.cpp26

What is the solution to this error?

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C :: Program To State User Chinese Zodiac And Horoscope Sign After Inputting Birthday

Mar 26, 2013

I am a beginner trying to write a program that would state a user's chinese zodiac and horoscope sign after inputing his or her birthday. I have been, however, having trouble getting the program to run correctly.

Code:
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

#define CAPRICORN "G"
#define AQUARIUS "W"
#define PISCES "F"

[Code] ......

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C++ :: Write Program That Uses Boost Library To Input String Date?

Apr 23, 2014

I'm trying to write a program that uses the Boost library to input a string date in the format mm/dd/year and outputs to the string its corresponding day of the week. I wrote the program that I thought would accomplish this, but it doesn't seem to work. Below is the code I wrote:

#include <string>
#include <iostream>
#include "boost/date_time/gregorian/gregorian.hpp"

[Code]....

When I compile this using codeblocks it gives me the error "In function `ZN5boost9date_time19month_str_to_ushortINS_9gregorian10greg_monthEEEtRKSs':|
C:Users
osaDesktop est3........Liboost_1_55_0oostdate_timedate_parsing.hpp|67|undefined reference to `boost::gregorian::greg_month::get_month_map_ptr()'". And it takes me to the file date_parsing.hpp and highlights line 67. I don't understand why this isn't working.

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C++ :: Empty State Of Queue?

Feb 18, 2013

what is the empty state of queue?

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C/C++ :: Linux Console Get Key State

Jan 23, 2014

I want to create command line game in Linux but I don't know to get the key state. I heard of getch() but that stops the program.

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C++ :: State Of Variable In One Expression

Mar 27, 2014

I thought that an operator performs a permanent change in a local variable. For example, if x is 00000000 00000000 00000000 00000011 (a 32 bit unsigned integer that resolves to value of 3) and p is 2, in the expression "return (x >> p) | (x << (s - p))", the right shift would permanently change x to 0 and the time we evaluate x again in "(x << (s - p))", x will already be 0. If that's the case, then this function doesn't make sense. This function makes it seem like that the >> and << operators do not change the value of x. It makes it seem like first we right shift x to 0 and then left shift by 20 bits to make x 11000000 00000000 00000000 00000000. If that's the case, then the function does exactly what it is supposed to do (rotate the bits). So which is it?

unsigned int rightrot(unsigned int x, unsigned int n) {
size_t s = sizeof(x) * CHAR_BIT;
size_t p;
if(n < s)
p = n;

[Code] ....

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C++ :: Changing State Names To Abbreviations?

Feb 13, 2014

The purpose of the code is to read in state names, say california and print CA. However, if it was a state with two words, it would read in only the first letter of each. I.E New Hampshire would be NH.

here's my code:
#include <iostream>
#include <iomanip>
#include <cctype>

[Code].....

I am able to get the one word states and tried getting the two word states but it doesnt work.

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C++ :: Making A Finite State Machine For Lab?

Apr 20, 2013

I am making a finite state machine for a lab. I have here a 2 files with the code for the FSM. I know it isn't finished yet, I know what needs to be put in. The only things I would need help on are the errors that I get.

Warrior.h
#ifndef _WARRIOR_
#define _WARRIOR_
#include "State.h"

[Code]....

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C/C++ :: Reverse A String And State If It Is A Palindrome

Mar 28, 2015

I am supposed to take the three string lines from a text file and then individually reverse them and state whether or not they are a palindrome. I have the three lines from the text file into string variables already but I am not sure on how to reverse them and then see if they are the same reversed(palindrome)

Here is my code so far -->

#include <iostream>
#include <string>
#include <cctype>

[Code].....

EDIT: Ignore line 123 and down in the code. That was merely test code and will not be used.

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Visual C++ :: Debugging - Revisiting Same Memory State?

Oct 31, 2013

When running my code in Visual Studio, there is a particular point in the code where my program is crashing. To debug this, I am adding a break point in Debug mode just before that point, and observing what happens as I step through the code. However, to get to this break point in the code takes about a minute of running the program. So I'm wondering if there is a tool in Visual Studio to reload the state of a program's memory from a previous run, so that I can immediately get to the break point without having to wait for a minute each time?

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C++ :: State Design Pattern - Calling A Class Member

Oct 17, 2013

In the following code example of the State Design Pattern, in the main code at the bottom it defines an instance of class Machine, and then calls Machine::off;. Why doesn't it instead call fsm.off;?

Machine fsm;

Machine::off;

Then I tried imitating that by adding a class Abba, and then doing:

Abba a;
Abba::DoStuff();

but that didn't work. Why?

Full code example:

// StatePattern.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
using namespace std;
class Machine {
class State *current;

[Code] ....

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C/C++ :: Circular Buffer In The Form Of Finite State Machine

Dec 11, 2014

I'm supposed to create a circular buffer that reads an input file and outputs data after running though basically an integral equation. Everything my be referenced by pointers. When I build I am being told segmentation fault: 11. From what I have gathered that means there is a problem with my memory allocation correct? I'm including the custom header file and the main.c as well.

header file :

#ifndef FSM_H
#defineFSM_H
#define INPUT_BUFFER_LENGTH 2
#define OUTPUT_BUFFER_LENGTH 2
#define INITIAL_INPUT {0,0}
#define INITIAL_OUTPUT {0,0}

[Code] .....

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C++ :: Concatenation Of Strings When Entering City / State And Zip Code

Apr 15, 2013

I have written my code, but can't seem to figure out why it doesn't enter the while loop and start asking for Input.

Code:
#include <iostream>
#include <string>
using namespace std;
int main(){
//declare variables
string cityName = "";
string stateName = "";

[Code] ....

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C/C++ :: Cannot Add New Variables To Program - Crashes After Compiling

Oct 24, 2014

Problem: When I add a new variable to complete my program, it crashes. I have tried tracing where the problem is but it leads to adding new variables

Purpose of program: Every 2 lines of the input file belong to 1 participant. The line with decimals include times a person has run miles. While the second line of each participant are integers that indicate the best sets from workouts the participant had done.

so an example of the output

Participant #1
Cardio Workouts:
Best Time:
Worst Time:
Average Time:
Weight Workouts:
Most Sets:
Least Sets:
Average Sets:

Participant #2
...

Why my program is crashing

#include <stdio.h>
int main () {
// Stats Col0=BestTime Col1=WorstTime col2=mostSets col3=leastSets Col4=Average_time Col5=Average_sets
float chart[20][12], stats[10][6], best_time=100, worst_time=0, most_sets=0, least_sets=100, avg_time, avg_sets, sum;
int i, j;
int p=0;

[Code] .....

Attached File(s)
input1.txt (817bytes)

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C++ :: Multiplying Variables In Program The End Result Comes Up As Null

Jun 4, 2013

So I have this program to calculate the types of meat, I have fixed the system errors but the actual program when I run it comes up with <null>

Code:
#include <stdio.h>
#include <stdlib.h>
#define beef 1 /* multiplication factor of beef*/
#define chicken 1.5 /*factor of chicken*/

[Code] .....

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C++ :: Read Variables And Methods Of Another Program In Memory?

Jan 16, 2013

i want to write a program that can access to variables and methods of another program. I ques for access to variables need to read memory, but about methods?how i can use methods and call them?

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C++ :: Loop Program To Go Back Without Losing Values Of Variables?

Mar 30, 2014

I know that returning to main() is not a good idea but how will I loop the program to go back to the position selection when the voter is done voting for the last position.

when I run the program it seems fine. getting the votes from President to PRO Position is fine. The problem is how will the next voter vote without losing the vote (tally) of the previous voter?

FLOW:
SELECT POSITION (a-e) ---> SELECT A CANDIDATE (a-c) ---> (this goes on until the position of PRO) ---> ( then go back to the POSITION SELECTION)

After every vote there is a case statement for which I can choose to vote for the next position, quit, or show results (and after showing the results it will go to the next position to vote)....

#include<iostream>
#include<string>
#include <conio.h>
using namespace std;
int pca=0,pcb=0,pcc=0,ptv=0;

[Code] .....

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C++ :: Sorting Program That Uses Variables From Another Class - List Not Declared In This Scope

May 13, 2014

I've got this sorting program that uses variables from another class but I'm not sure why its not recognizing it. I'm getting an error length and list not declared in this scope.

#include <iostream>
#include "arrayListType.h"
using namespace std;
template<class elemType>
class orderedArrayListType: public arrayListType<elemType> {

[Code] ....

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Visual C++ :: Puzzle Game - Implement A Way To Save Board State Throughout User Inputted Path

Mar 16, 2013

I've been trying to figure out how to implement a way to save this board state throughout a user's inputted path. At the end, I need the output to print out the board states (user's path) of how he or she got the puzzle solved. This puzzle is the 15 Puzzle; but we have it to change by the user's input on what size they want to play (3x3 to 5x5). How to save the board state of each user input, then print those out in order from beginning to solved puzzle state. Subsequently, I would also need transferring the board state to change with using a vector to store the size based on user input. How to proceed, using a first search to solve the puzzle from the current board's state.

calculations.h

Code:
/*Calculations set as a header to keep compiling simple and faster*/

#ifndef calculations
#define calculations
int solved[5][5];
void initialize(int board[][5], int);
void slide(int board[][5],int move,int);
bool isBoardSolved(int board[][5],int);

[Code] .....

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C :: Compiling Sudoku Program - Declare Constant Instances As Global Variables

Sep 18, 2013

I am trying to compile a c program for sudoku. I have declare const instances as global variables, but when i try to compile the code it says that my declarations are not constant, here is some of the code.

#include <stdio.h>
#include <assert.h>

const int GRIDSIZE = 3;
const int GRID_SQUARED = GRIDSIZE * GRIDSIZE; //this line
const int ALL_VALUES = (1<<GRID_SQUARED)-1; //and this give//the error
int board [GRID_SQUARED][GRID_SQUARED];

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C++ :: How To Boost Up Execution

Feb 23, 2013

I wrote a program to run long simulations, in one cpu core computation. During the run, I checked the cpu occupation was always around 85%.

Since my simulation took time to run. How can I boost it up to make my cpu run at 100%? Is that because my RAM is not fast enough?

info about my laptop: cpu frequency: up to 3.2 GHz. RAM frequency: 1333 MHz.

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