51,593 Topics
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| | while i was learning about global variables I did some trials and found one problem. Here goes my code. [CODE]int cows = 10; //global variable void farm1() { int cows; cout<<"in farm1, cows="<<cows<<endl; cows++; } int main() { //cout<<"in main, cows="<<cows<<endl; farm1(); //cout<<"back in main, cows="<<cows<<endl; } [/CODE] Here line …  |
| | [CODE] #include <iostream> #include <ctime> #include <cstdlib> #include <string> #include <algorithm> using namespace std; //Types and Arrays string word[16] = {"GOLDFISH", "COMPUTER", "ANONYMOUS", "JACKET", "SHARP", "SERVICE", "EFFORT", "CHARACTER", "CHANGE", "WITHOUT", "PRODUCT", "UNFOLDS", "MUSIC", "MOMENT", "LIFETIME", "PROVIDE"}; char guess[50]; static const char Y= 'Y'; static const char N= 'N'; char ans; … |
| | I've implemented a version of the String class (named Str) and I was implementing the getline fucntion of the getline function that's what I got [CODE]void* getline(std::istream& is, Str& s){ s.clear(); char c; if(is){ while(is.get(c)) s.push_back(c); return s.begin(); } return NULL; } [/CODE] I used void* so I would be … |
| | I'm having some difficulty figuring out how to delete the objects I new'ed during run-time. I'm using a heterogeneous collection. Simplified Example: [CODE] const int SIZE = 4; myBase* objs[SIZE]; objs[0] = new myChild1(); objs[1] = new myChild2(); objs[2] = new myChild3(); objs[3] = new myBase(); //I tried: for(int i … |
| | I'm getting a segmentation fault at this line. So far, my program has classes. A blahpod with class of songs in them. Then there is the node class. I call the operator= which is supposed to put one pod into another. It looks like so [CODE]bobcatPod bp2( bp1 );[/CODE] That … |
| | [code] std::string headerInfo = " "; //Verify stream is still in good condition if(streamReader->good()) { streamReader->ignore(fileSize, ':'); //work arounds =) v------------v streamReader->getline(&headerInfo[0], sizeof(headerInfo), '\n'); } else { //Error } return headerInfo; [/code] The first parameter of getline wants a char* to store the data, so instead of creating an array … |
| | I found this somewhere on some website. Would you care to decode it, like explain why, when, and how they used the codes? The only part I didn't get is how did they get "largest_1" and "largest_2" by doing this. I see that it loops to find it but does … |
| | I am doing Yahtzee and I need help creating a hold function. can anyone help me?  |
 | [CODE] Rectangle ^ClientResolution = gcnew Rectangle(); ClientResolution = Screen::GetBounds(); float CurrentWidth = 1366 ; float CurrentHeight = 768; float RatioWidth = ((float)ClientResolution->Width / (float)CurrentWidth ); float RatioHeight =((float)ClientResolution->Height / (float)CurrentHeight); this->Scale(RatioWidth,RatioHeight); [/CODE] error C2661: 'System::Windows::Forms:: Screen::GetBounds' : no overloaded function takes 0 arguments Any help would be much appreciated. |
| | I have this problem i had to do for school and im a little confused on what i should put in my first while loop for my program. Thanks for any help pointing me in the right direction! Heres the problem. [url]http://img546.imageshack.us/img546/7454/problemfk.jpg[/url] and heres the code i have so far. …  |
 | Is there any function that allows me to completely remove and [I]deallocate[/I] all contents of a std::map? The functions [icode]clear()[/icode] only removes all elements, it doesn't free any memory.  |
| | Currently I'm having an issue with a homework problem although I'm not asking for the answer. I Just want to see if anyone is able to help me trouble shoot my issue... Issue: - ArrayPointer.cpp: In function ‘int* duplicate(int*, int)’: - ArrayPointer.cpp:62: error: expected `;' before ‘list’ - Line 6 … |
| | Hi, I am trying to write a small program that would permute a list of binary numbers to the nth bits. Some reason, the code is not compiling. Also, I am using Visual Studio C++ 2010 Express. When i attempt to compile a code, it doesn't highlight where the errors … |
| | I am using borland compiler 3.0,is there any way such that the output window will close on its own after the required functions has been completed by the program? |
| | [CODE]class Node { public: string name; list<string> edges; };[/CODE] [CODE]list<Node> nodes;[/CODE] Hello, Can you help. I used this class that you gave but i've struggling to add anything. I tried nodes.name.push_back(str); but no use, and also i tried nodes::name.push_back(str); i also tried to compare sections by trying nodes[i].name == temp; … |
| | what is wrong with my code? in inputs like "radar" or "tttt" should say its palindrome. [CODE]#include <iostream> using namespace std; bool testpalindrome(string,int,int); int main() { string wordX; bool result; cout<<"Enter string: "; getline(cin,wordX); result=testpalindrome(wordX,wordX.length()-1,0); result==true ? cout<<"\nthe string is palindrome!" : cout<<"\nthe string is NOT palindrome!\n"; } bool testpalindrome(string … |
| | I want to write a simple c++ program that allows me to edit my database tables.Each table stands on its own(no table is related to another).The UI i want is simple.I want my tables to be shown as follows: [LIST=1] [*]Table-One [*]Table-Two [*]Table-Three [*]Table-Four [*]Table-Five [*]Table-Six [*]Table-Seven [*]Table-Eight [*]And-So-Forth [/LIST] …  |
| | Newbie to C++ but i am a Java programmer. Trying to learn C++ now. Reading the C++ Primer by Stanley Lipmann. I don't understand this sentence in Chapter 3 about library types. He's talking about library type string and vector. "These library types are abstractions of more primitive types - … |
| | [code]#include <iostream> #include <WinSock2.h> #include <mysql.h> #include <string> #include <vector> #include "action.h" using namespace std; MYSQL *con; st_mysql_res* res = NULL; MYSQL_FIELD * field[200]; MYSQL_ROW myRow; CAction * m_pActionList[1000]; int LoadActions(); int main() { con = mysql_init(con); if(!mysql_real_connect(con,"127.0.0.1","test","test","account_zf",NULL,NULL,NULL)) { cout<<"Error connected"<<endl; system("pause"); exit(-1); return false; } LoadActions(); system("pause"); return 0; … |
| | how can i make table like this : For example: Fadi recommendattion ----- ---------------- 1212 you must at least gain :1kg if fadi>1212 you must at least gain 1 kg how to make a table like that in c++ and i want to put the result of if in recommendation … |
| | I have a little problem with strcmp here,the following code basically opens a file and writes to it until I enter "\esc",at which point the program should stop....but the problem is,it does not,and I can't figure out what might be the prob.Thanks for your time(I am using turbo c++ 3.0 … |
| | I'm trying something like this [CODE]void receiver (char* x) { cout<<x<<endl; //prints "a" cout<<*x<<endl; //prints "a" cout<<&x<<endl; //prints address of x } int main() { char p = 'a'; cout<<p<<endl; //prints "a" cout<<&p<<endl; //prints "a" receiver(&p); } [/CODE] In the main function for both p and &p, it is printing … |
| | [CODE] #include <iostream> #include <ctime> #include <cstdlib> #include <string> #include <algorithm> using namespace std; //Types and Arrays string word[16] = {"GOLDFISH", "COMPUTER", "ANONYMOUS", "JACKET", "SHARP", "SERVICE", "EFFORT", "CHARACTER", "CHANGE", "WITHOUT", "PRODUCT", "UNFOLDS", "MUSIC", "MOMENT", "LIFETIME", "PROVIDE"}; char guess[50]; static const char Y= 'Y'; static const char N= 'N'; char ans; … |
| | Hello. I want to make a game card that is played by two players who are on different PC's and playing via internet. I am new at network programing(I guess that is called socket programing), so I don't really know from where to start, I have done some digging on … |
| | Hi guys, I'm supposed to make a program that calculates how many months it would take to pay off your credit card balance with a 14% yearly interest rate. I've written out what I believe to be it but I end up getting this. [url]http://omg.wthax.org/error_2.png[/url] The program doesn't seem to … |
| | Hi, I'm trying to make a program that will write to a file and tell it that the next time that the program is run to not do the first part of the program. [CODE] fstream install; //this is what all of the tutorials say to do. install.open(ready.txt); //this is … |
| | I have a big problem. Wheb I try to automate Outlook, I need to make a wrapper...My outlook version is 14. Unfortunatelly I need my proggy to work on all versions of Outlook. how to do that? My code to send email is: [CODE]string allbody; System.Diagnostics.Process.Start("outlook"); Outlook._Application oApp = new … |
| | I'm really lost on this topic. I'm trying to study for an exam. 1)When the symbol '&' is in front of a variable, it is referring to the address right? How is it different from a reference parameter? I keep getting them mixed up. 2)By dereferencing it, it means that … |
| | here are some questions that i have to improve my code readability since i study alone and my code starts to be more big and more chaotic i have some questions that maybe will sound silly to more but i have to ask someone. 1- its better to declare global … |
| | I have not worked with the debugger at all and I have a assignment to debug a program. I don't want just the answer I need help using the debugger. Correct the Logical errors in the code so that the output of the program appears as such: * ** *** … |
| | So, I need to find a way to create a way for the computer to ask for input, for this example lets make it 1 and 2. 1 for yes and 2 for no. [CODE] int yes; int no; cout << Do you like orange chicken?" << endl; cout << … |
| | Hello every body The doctor gave us to solve this assignment i tried to solve it but i could not can you tell me how i solve it please the assignment is attached and this is my code: [CODE] #include <iostream> #include <iomanip> //FOR SETW #include <climits> using namespace std; … |
| | Write a program that simulates the “heap” using a linked list. This program should take one node of size 9096 kb. Assume all request will be made in kb. The user should request a size of memory from the system, then the system should find memory that can be allocated …  |
| | Hi, my homework problem is to convert minutes into hours AND minutes ex. 124 minutes = 2 hour(s) and 4 minute(s) (there will be some if statements for plurals of hours and minutes if possible) This is my code so far but I'm getting an error [CODE]#include <iostream> using namespace … |
| | Hi, I am trying to add 2 menuItems to a toolstrip menu. I cant get it to work and wonder what I am doing wrong. Also I like to add a click event to those items each that will open up the respective URL for each item "http://www.google.com" and "http://www.yahoo.com" …  |
| | I need help with a program for a class. I got all the issues taken care of but this one: error C3861: 'menu': identifier not found My program code is (I know it stupid but I can't see it) [CODE]#include <iostream> using namespace std; int main ( ) { int … |
| | Hi. This program is pretty much working. I just can't figure out how to compare the higher hand when each player get a pair/three a kind. CardDeck.h [CODE]enum Suit {clubs, diamonds, hearts, spades}; //---------------- C L A S S C A R D ----------------------------------------- class Card // this class describes … |
| | ERRORS: 8 C:\Documents and Settings\csc182\Desktop\devc++\ellipse.cpp `main' must return `int' C:\Documents and Settings\csc182\Desktop\devc++\Makefile.win [Build Error] [ellipse.o] Error 1 what does this errors mean?? here is the code.. #include<stdlib.h> #include<conio.h> #include<graphics.h> #include<dos.h> void main() { int x,y,i; int g=DETECT,d; initgraph(&g,&d,"\tc\bgi"); cleardevice(); x=getmaxx()/2; y=getmaxy()/2; settextstyle(TRIPLEX_FONT, HORIZ_DIR, 3); setbkcolor(rand()); setcolor(4); outtextxy(30,100,"Press"); outtextxy(30,130,"any"); outtextxy(30,160,"key"); outtextxy(30,190, … |
| | #include<iostream.h> class A { public: read() {cout<<"read"; }}; class B:public A {public: readb() { cout<<"readb"; } }; class C:public A { public: readc() {cout<<"readc"; } }; class D:public B,public C { public: readd() { cout<<"readd"; } }; main() { D d; //d.read(); d.readb(); } am getting error for this...  |
| | i want to know what will be the sequence of values to be print out for the following algorithm using trace table count=1 count=count + 1 while(x<2)prin the value of x elseprint the value of x My answers is 0;2;2 idon't know if they are correct |
| | 1. a cow is defined as a guessed digit which is correct in value but not in position eg a secret number is 1234 and users guess is 2890 the result will be one.creat a value returning function called calcCows which accepts array parameters representing the user's and the secret …  |
| | Hello all. I am new to c++ and and our teachers have started Object oriented programming.. I am facing real trouble in understanding the concepts of constructor and destructor. Why are they used and how are they used.. Please post... |
| | Hello, I have just started to learn C++, and so I got my self a copy of "TEACH YOURSELF C++ IN 21 DAYS". 1/ Could someone pls say if this book is suitable for a new a newbie. 2/ And what about it's counterpart, " TEACH YOURSELF C++ IN 24 … |
| | I'm creating a library that easily adds a bunch of debugging features to c++ programms. At the moment I have these features: - A more useful assert dialouge. - Pointer validation using IsBadReadPtr/IsBadWritePtr. - Memory leak tracking. I'm trying to think of other features I could add to this. What … |
| | Hello guys, Firstly I want to apologize If I ask something silly, but I have just started learning C++, and I really don't know much. As a practice I have a challenge of writing a matrix in a file, and then reading the information (numbers) from it, and in the … |
| | Could someone help me. I don't know why i get a stack corruption . Here is my program: [CODE]#include<iostream> #include <fstream> #include<conio.h> #include <string> #include "aes.h" using namespace std; int main(int argc, char **argv) { unsigned char key32[32]; unsigned char iv[16]; unsigned char* inbuf=new unsigned char[128]; unsigned char** intext=new unsigned … |
| | Hi folks! My friend just asked me to code a program which detects ellipses of an image. The images he will use with this program have 2 different kinds of pixel values - black (0) & white (255). So I researched a bit and found an algorithm for ellipse detection … |
| | [CODE] #include <iostream> #include <ctime> #include <cstdlib> #include <string> #include <algorithm> using namespace std; // Functions int instructions(); int game(); //Types and Arrays string word[] = {"GOLDFISH", "COMPUTER", "ANONYMOUS", "JACKET", "SHARP", "SERVICE", "EFFORT", "CHARACTER", "CHANGE", "WITHOUT", "PRODUCT", "UNFOLDS", "MUSIC", "MOMENT", "LIFETIME", "PROVIDE"}; char guess[50]; char inst[50]; int main() { cout …  |
| | I am having troube getting this program to compile. I have been on it for the past 5 days and starting to feel burn out. maybe an extra set of eyes can point me in the right direction of what i'm doing wrong. The error messages i'm getting are: expected … |
| | What's wrong with this code.... //templates #include<iostream> using namespace std; template <class t> t max (t w,t x) [B][COLOR="Red"]--->here i get no error if I use &w and &x in place of w and x...[/COLOR][/B]{ if(w>x) return w; else if(w!=x) return x; } int main() { int a=10,b=343,c; c=max(a,b); cout<<"Max="<<c; … |
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