51,593 Topics
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| | Hi there, Is there a way to check a variable if it is not initialzed by value ? I need a check for all datatypes. int num; if(!(numIsNotInitialized)) num = 12; else cout<<"num : " <<num <<endl;  |
| | Hi there, I am implementing the concept of polymorphism and write following program of shapes. #include <iostream> using namespace std; class Shape { protected: double width, height; public: void set(double w, double h) { width = w; height = h; } virtual double get() { return 0; } }; class … |
| | How can i draw concentric cirles in c++ with a user inputed radii? |
| | Hi, folks. I would like to start posting a few C++ code snippets and thought I would start with something well-known and simple: a Quadratic Equation Solver. I am trying to be as thorough as possible, so am also considering the possibility that a non-quadratic equation might be fed into … |
 | I got some source code on net for displaying 256 bit bmp in turbo c++ which is using some assembly codes (actually using asm---about which I don't know anything). Unfortunately during compilation it give an error saying "286/287 instructions not enabled". Help me troubleshooting this problem. |
| | can u please help me, i have a question on classes that says, implement a matrix class that using dynamic memory allocation to add,subtract,multiply, display diagonals and deternimant, two matrices.  |
| | Write a C++ program to display your personal information: Name: A. Another School: Tuungane High School County: Umoja Year Joined: 2004 Subjects: Mathematics, Computer Studies, English School KCSE Mean: 9.82 |
| | Hi all there. Firstly I apologize if this is not a specific question (please do point it out if you find this unpolite). I don't have real problems so if you're not personally interested feel free to save your time and close this thread :) Anyway, I had to write … |
| | I am getting into game programming more and more. I have been learning DirectX11 but it is hard and very low level. I am looking for a game librarie that has these spesifications: Must be in C++ (the library doesn's have to be written in C++. As long as I … |
| | class Program {class Program { static void Main() { int TotalCoffeCost = 0; Start: Console.WriteLine("**Caffe Menu**\n\n1-Small = 1$, \n2-Medium =2$, \n3-Large"); Console.WriteLine("-------------------------------------------------------------"); int UserChoice = int.Parse(Console.ReadLine()); switch (UserChoice) { case 1: TotalCoffeCost += 1; break; case 2: TotalCoffeCost += 2; break; case 3: TotalCoffeCost += 3; break; default: Console.WriteLine("Your Choice …  |
| | this is my code, when even i run it it tells me that the number is even while it is odd. #include<stdio.h> #include<stdlib.h> int main(void) { int value; /* To read a number and say wheither it is even or odd*/ printf("Please enter any number \n"); scanf("%u", &value); if (value/2 … |
| | Hello, I made a program that worked perfectly on one of my pcs. When I moved it to another computer I am getting an error now stating that I need to include a pointer on my fmin and fmax functions. I'ts somewhat lengthy but I want to know if maybe … |
| | code that mimic a shopkeeper services, counting stock, selling, billing |
| | I have roughly 500 function pointers defined in a header like so for example: void (__stdcall *ptr_glAccum) (GLenum op, GLfloat value); void (__stdcall *ptr_glActiveTextureARB) (GLenum texture); void (__stdcall *ptr_glAlphaFunc) (GLenum func, GLclampf ref); GLboolean (__stdcall *ptr_glAreTexturesResident) (GLsizei n, const GLuint *textures, GLboolean *residences); void (__stdcall *ptr_glArrayElement) (GLint index); void (__stdcall … |
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| | Hi I am back I need am working on an unfinished project and cant get it to compile past line 44 , any help with why it wont do that would be great . I just am trying to get what I currently have to compile . my assignment , … |
| | no matching function for call to `getline(std::string&, char&)' Why is this error occuring? HELP ME SOLVE THIS My Aim is to copy each character or integer to an array A.S.A.P MY PROGRAM:- #include <fstream> #include <iostream> #include<conio.h> #include<string.h> using namespace std; int main () { char a[50]; ifstream someStream( "txt.txt" … |
| | discuss the fundamental data types supported by c++ programming language and state how each type is stored  |
| | a company pays employees gratuity on retirement that can be computed using the formular: grayuity= (salary x fixed rate x number of years worked) + one month salary. formulate an algorith that can be used to calculate the gratuity and write a c++ program that can be used for the …  |
| | Is there a preprocessor that can check if a header exists before trying to #include it? |
 | Hi, I know how to make C++ plugin based application with C++ plugins. I need to add ability to code plugins in Python. I want users to be able to write Plugins in any language (C++ or Python). What are fundamentals of writting app in C++ but support plugins in … |
| | Hello, So windows has PPL for multithreading for loops, what's the linux equivalent to that? |
| | I need to know whether in c++ we can read values from a .txt file and use it to calculate something. **EXAMPLE:-** *In the TEXT FILE-* FoodCode: f2,f3,g2 where anything of type **'f'** is **50bucks** and of type **'g'** is **100bucks**. & By using a C++ Program i want to …  |
| | //I Have three lines of error code and can not figure out what is the problem! Lines of error are bolded! //They are in void circle(), void Trapezoid(), and void Sector().  |
| | Hi, I want to know how to read multiple text files in this program... I have 5 text files(order1,order2,...order5) Can anyone pls help me with this? I use DevC++. #include<iostream.h> #include<fstream.h> #include<conio.h> #include<windows.h> using namespace std; class{ public: void menu() { ifstream menu; menu.open("menu.txt"); string STRING; string inFile_contents; string previousLine=""; … |
 | I am just starting out with c++, but I have a goal in mid. I have already programmed the logical portion of what I wish to acomplish in Java, but it doesn't work, because I can't set a usb to read only for the whole system in Java (if I … |
| | I'm looking at getting back to C++ . Its been awhile since I last did it, so I am planning on going from the very beginning and looking for a site to learn it from. I've found a few but wish for the best one to stick to. Thanks in …  |
| | Hi,I am a c++ beginner. I am using vs,and I got a problem in my code which check a sentence whether a palindrome or not. #include <iostream> #include <stack> #include <queue> using namespace std; int main () { bool palindrome = true; char character; StackType stack; Queue queue; char stackChar; …  |
| | Hello, I am trying to start implementing functions from a class into my Calculator just to get used to the idea of it. when I tried calling for my min max functions into my calculations function it is spitting out an error arguement of type "float" is not compatable with … |
 | This works in C++ Builder: int chcolor; for(int d, d < 5, d++); { String name = "d" + IntToStr(i+1); TLMDSpeedButton* button = dynamic_cast<TLMDSpeedButton*>(this->FindComponent(name)); chcolor = random(6)+1; switch (chcolor) { case 1: button->Color = clRed; break; case 2: button->Color = clSilver; break; case 3: button->Color = clBlue; break; case 4: … |
 | so I've been looking for a good forum to post to frequently that would help with me problems in my programming if I come across them. Well, this looks like as good a place as any, so I figured I'd let you guys know that I'm a beginner programmer and … |
| | Yes, I know what I'm talking about. which is Creating my own compiler to compile a language say C++,Java,Ruby, Python ..(Any one of them ofcourse -.- ) Actually, if I can just get the source code for an existing one that would be much better. [example] Say there's Turbo C …  |
 | I'm making a word descramble program for http://www.hackthissite.org/missions/prog/1/ . I think I have a lot of this code correct but I dont know how to read each indivdual character in the scrambled string and compare it to the letters in the unscrabled string from the word list. #include <iostream> #include … |
| | Sir, I have 2 column having so many points. In the 2nd column there r 3 highest peak points like(6,4 and3) bellow 6 5 5 4 4 4 3 3 3 3 3 2 2 2 2 2 2 1 1 1 1 1 1 2 3 4 5 6 … |
| | Write a program that asks the user to enter the number of Research projects done by 10 different students (Student 1, Student 2, ..., Student 10). Once the data has been entered the program must analyze the data and output the student who did the most Research projects |
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 | # include <iostream.h> # include <conio.h> int main() { float income=0; int tax=0; float r1=0.0; float r2=0.1; float r3=0.2; float r4=0.3; float r5=0.4; float r6=0.5; cout<<"Enter income:"; cin>>income; if(income>=100,001) tax=income*r6; else if(income<=100,000 && income >=70,001) tax=income*r5; else if(income>=70,000 && income >=50,001) tax=income*r4; else if(income>=50,000 && income >=30,001) tax=income*r3; else if(income>=30,000 … |
| | I need help reading lines from text files. I have been trying to read the first line just using getline(stream,line) assuming that my text file starts on the first line. This line of the text file is supposed to tell you how many lines there are so the next step … |
| | the program exites as soon as it reaches the end but I want it to ask the user if they want to exit or continue again? |
| | I'm a little confused with an assignment here and i just needed someone to point me in the right direction. Design an inventory class that stores the following members: serialNum : An integer that holds a part’s serial number. manufactDate : A member that holds the date the part was …  |
| | Essentially I have two header files, one called 'ACYDTypes.h' that contains the classes for the basic types of this system and the other called 'Settings.h' that contains function for general settings. In the Settings.h file, there is a namespace called 'Ac_Type_Settings', and within that is a class called 'AcTypeSettings'. This … |
| | I would like to start using the new fetures of c++0x like the constexpr. I currently have visual studio 2010 express c++ and I was wondering if there is a way to update the compiler but still use the same GUI? Oh and if anyone know how to permanantly disable … |
| | can you guys please help me out?? |
| | could you please tell me what is the logic behind different variations of priniting stars e.g **** ** * what loop will determine how many coloumns and rows are to be printed and how? Thank you very much!  |
| | sum=0; while(count<20) cin>>num; sum=sum+num; count++; I did made this one but I think it's wrong..can you help out guys? #include <iostream> #include <conio.h> using namespace std; int main() { int sum,num,count; count=0; while (count<20) { cout<<"cin num"<<endl; cin>>num; sum=sum+num; count++; } cout<<"sum="<<sum<<endl; getch(); return 0; } |
| | So I'm making a IOS game and when I try testing my game in xcode simulator I get these errors below. Anyone have an idea what's wrong. Btw the behaivor is for unlocking new levels if actor collides with an object: Error in line 49: invalid operands of types 'objc_object*' … |
| | What would be the best way to initialize a Multiple array (1,2,3) within an array (1,2,3) within an array(1,2,3)? |
| | Write a program that counts words, characters, uppercase letters, lowercase letters, digits and special characters in a phrase |
| | I have some problem with image processing (24-color bmp and 8-bit grayscale). I have read a *.bmp file. Can anyone help to rotate and flip bitmap image(using C++, without openCV library)? Thanks.  |
| | Hi there, I have read that when we create object of a class, its default constructor is automatically called and default constructor assigns default values to variables e.g. to int it assigns 0 and to float it assigns 0.0 ... But I have write a program in which I have … |
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