51,593 Topics
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| | I need help with errors I am getting with my program that is suppose to take in lines of text and out put the number of letters to the user. I have a lot these errors [QUOTE]expected primary-expression before ' ' token[/QUOTE] |
 | When I compile the program it returns "error C2065: 'answer' : undeclared identifier". I thought answer was declared from the function and would call answer. Any tips where I'm going wrong on this. The program is made to out put Radius, cosx(x), and a user defined cosx in 3 rows. … |
| | Hi So I've been developing this game for a game design class for most of the semester. While I'm not new to C++ and Object Oriented Design, the theory of it is often a lot easier to comprehend and know than the actual application of it. Needless to say, I've … |
| | For future reference here are the instructions for my assignment. Thank you in advance for any feedback you can provide: Implement the Message class using a header and implementation file named Message.h and Message.cpp respectively. In addition to the two Message class files, you must write a driver. The driver … |
| | I am having a serious problem with a assignment i must do, this is the final assignment and the person that used to help me is not helping me anymore, i need to recieve a good grade on this assignment, and i dont know how i can because i dont …  |
| | Write a program that will do the following: 1. Define a function that will read from a file text paragraph convert the whole paragraph into capital letters and print it on the screen after conversion. 2. Define a function that will count and return number of vowels in the above … |
| | Hi everyone. Getting compile errors with the following code that i can not figure out...: [code] template <class T> class X{ class Y{ public: Y(); }; X(); }; template <class T> typename X<T>::Y * operator[](X<T> * obj1, int index); [/code] The compile error from mingw is: [code] test.h:18: error: 'typename … |
| | To make things easier for cosing in Win32 API, MFC is created which wraps Win32 API in classes. At the beginning i though MFC is there only to aid you making C/C++ GUI Application. For example, CSocket() wraps the function socket(), printf() gets wrapped in another class, and so on. … |
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| | I need to find out, because my program deals with numbers, how to block characters from being inputted. Such as, [code] int input; cout<<"Please type in a number."<<endl; cin>>input; //input should be a number. A letter? Oh no. [/code] if the input would have been a character, BOOM! Program == … |
| | Hi In the below code , i am getting compile time error when declaring the copy constructor . C:\work\Dev-Cpp\bin>"mingw32-c++.exe" dynamicArray.cpp dynamicArray.cpp:13: error: expected `,' or `...' before '&' token dynamicArray.cpp:13: error: ISO C++ forbids declaration of `dynarrray' with no t ype dynamicArray.cpp:13: error: `dynarray::dynarray(int)' and `dynarray::dynarray(in t)' cannot be overloaded … |
| | I have a very similar issue. I am also doing and assignment and needed a function grow. This was to increase the size of the object array Savings by s, if it was not NULL, or make its size s if it was null. In both the case it was …  |
| | Hi All, i have a problem in converting CString to Int/Double, function i am using is _wtoi , _wtof..... Here if the CSting value has say "12345" this works perfectly. But if any other value is say ( Over flow ) " 11111111111111111111111111111" which exceeds the max size of int … |
| | Does it need a copy constructor and an operator= for a class which have array member? for example: Class A { private: B data_[100]; //B is a class }; does class A need a copy constructor and an operator? in other words, is the default copy constructor is OK for … |
| | I have string and a map<string,int> i need to iterate through the map and find string[i] and replace the int with the string. eg: if map contains hello 6 world 4 its 3 me 60 if the string is "its me hello world world hello" output should be "3 60 … |
| | I have a c++ program that performs a functionality. generate.h [code] struct code { bool out; bool *reg; }; class Cyclic { private: struct code *cy; int rgsize; bool *gen; int gensize; unsigned short cycodes[256]; public: Cyclic(int a, int b,bool c[]); void leftShift(); bool* cyclicCode(bool mssg[],int msize); void printReg(); bool* … |
| | Hey all, I posted a question earlier this week regarding dev-c++ and my inability to keep the output window (#include <iostream>) open long enough to see my program running! I have already tried the following things and would be grateful for any other suggestions! 1: (Without typing using namespace std;) … |
| | Hi Guys I have a query regarding "sizeof" operator and it is related to the program: [B][COLOR="Red"]{ int x; x=sizeof (-32768); printf("%d",X); getch(); }[/COLOR][/B] Then it's printing it's value as [COLOR="Red"]4[/COLOR], But logically it should be[COLOR="Green"] 2[/COLOR] because the integer range is from -32768 to 32767. ============================================== [B]And my second …  |
| | this is a linked list assigment and the required from me is to fill the functions: i have one fucntion left that i was unable to do which is void DeleteElement(int ID); and i have another problem the compiler states that i hve o errors but when i compile the … |
| | Hi viewers, I was trying to delete a file from my hard drive and I don't really have a good place to start. I googled it and came up with a code derived from multiple sources. I was wondering if anyone could help me out with the code to delete … |
| | I am trying to read a file from fstream in a switch statement but something in the code seems to be stopping this part of my code to be read by the compiler. Please some one let me know what am I doing wrong. Its not the text file thats … |
| | i nees to make a function to output students name in the form last name followed by a comma followed by a space followed by the first name and the name must be left justified than next to it need to print the student score and student grade like this: … |
| | [code=c++] 4 char *min(char *a, char *b, char *c){ 5 if(strcmp(a,b) > 0) && (strcmp(a,c) > 0) 6 return a; 7 else if(strcmp(b,a) > 0) && (strcmp(b,c) > 0) 8 return b; 9 else 10 return c; 11 } [/code] Code won't compile and the irony is i just did … |
| | Is it possible to call a void function from another void function? will this work? [code] mainMenu() { int input; cout<<"\t\t Main Menu \n\n"; cout<<"\t\t 1. Student Details \n"; cout<<"\t\t 2. Payment Details \n"; cout<<"\t\t 3.Exit \n\n"; cout<<"\t\t Select 1/2/3 : "; cin>>input; if(input==1) { void studentDetails(); } if(input==2) { … |
| | I have classes with inheritance (for now only Car, more to add on like Bus, Truck etc) and adding to list. 1) How can i display using the subclass display function? 2) Can list<Vehicle> list be in a class? [code=cpp] #include <iostream> #include <list> using namespace std; class Vehicle { … |
 | Here's what I'm trying out: [icode]Substitute characters into values with no set left bits; check if the next position is a vowel(or whatever), turn it into a value with no right bits set, join the two characters into a single byte, delete the unused position now.[/icode] Here's the code using … |
 | [code] Apply all steps of conceptual and logical database design on the following requirements: The system should be able to store a customer’s name, address, and contact information and a book’s ISBN, publisher, authors, and title information. A customer should be able to purchase one or many books at a … |
| | Hi all. When I create simple console application with Visual Studio C++ ,and I run it, my program shows on full screen, How to adjust my .exe files to show on single console window? |
| | so i have been sitting here for about 2 days finishing this thing and i still have one error left and i am having a hard time fixing it 1>k:\c++\energy bill part 3\energy part 2.cpp(119) : error C2059: syntax error : ';' here is my code thanks for your help … |
| | Hi all. I was writing my program. And halfway through, i tried to compile and run. but got a blank output. I tried doing a cout<<"hello"<<endl at the main() must still didn't get any display. could anyone please help me to see what went wrong? [code=cplusplus] #include <iostream> #include <fstream> … |
| | [code] #include <iostream> #include <cmath> using namespace std; int main () { float leg1, leg2, hyp; cout << "Enter one leg "; cin >> leg1; cout << "Enter one leg "; cin >> leg2; if ((leg1 < 0) || (leg2 < 0)) hyp = 0; else hyp = (sqrt((float)leg1*leg1 + … |
| | getting straight to the point, my program compiles fine.. it shows 0 errors and 0 warnings... but when i run my program, it just crashes.. u know the usual dialog box with buttons like send dont send and debug.. .. here's the code.. [CODE] // include the basic windows header … |
| | Hi all there. I was given the task to implement a Subset class with a few function. It should be structured so to contain the original set and make it possible to generate all subsets. Right now I'm focusing on the "generate all subsets" part. I've done a little searching … |
| | Hello, I have a problem creating a template class with copy ctor and cast operator to class of base template (using gcc 4.2). The program compiles if only one of them is defined but is not compiling if both (copy ctor and cast operator) are defined. The compiler error is … |
| | Need some help on text file compression.... Text File Compression. The text file compression must be able to perform the following functions: • Able to compress a text file and generate an index file • Able to decompress the file • Able to show the time taken for compressing and …  |
 | Hi All, For long now have tried to get Python bindings and none is there. jlgm suggested me to try ctypes and I dived in. But there are few examples on using ctypes for new bees like me. I tried to take lame_enc.dll (The file made me to learn ctypes … |
| | This is my example code: [code] #include <vector> std::vector<int> v; int main(int, char **) { std::vector<int>::const_reverse_iterator iter = v.rbegin(); if (iter != v.rbegin()) // or v.rend(), whatever, just problematic { } } [/code] Is this supposed to compile correctly? Using g++ 4.2.4 it does. Using [quote]sbox-i686-linux-gcc (GCC) 3.4.4 (release) (CodeSourcery … |
| | hey everyone im making an gui in C++ which needs to retrieve windows registrys such as windows version etc. however im stuck on some code i was hoping for some help please. [CODE] void GetSystemInformation(void) { float fprocessor; HKEY hKey; DWORD processorspeed; DWORD datasize; RegOpenKeyEx(HKEY_LOCAL_MACHINE,"Hardware\\Description\\System\\CentralProcessor\\0",0, KEY_QUERY_VALUE,&hKey); RegQueryValueEx(hKey,("~MHz"),NULL,NULL,(LPBYTE)&processorspeed,&datasize); fprocessor=float(processorspeed); if (fprocessor>1000) … |
| | ok so i got my code done but my logic in my code is off and my outputs are not coming out the way they should. so the following is a notepad file which is being read into my program 1231 washington, george 300 3431 adams, john 600 5767 jefferson, … |
| | Privet/hello/salut/halo/hola! I have the following code: [code=c] #include <iostream> #include <iomanip> #include <fstream> #include <cstdlib> using namespace std; using namespace Finder; int main() { ifstream in( "1.dat" ); Event *P = new Event( sphere ); double px, py, pz; while( in>>px>>py>>pz ) { P->AddParticleRaw( px, py, pz ); } in.close(); … |
| | Hello All, I was trying to make dll to play with ctypes in python. I'm not good at C++ and I studied it lightly looong ago and only familiar with very simple thing. After search the net I found smo instructions but when I try to Build (with CodeBlocks), I … |
| | hi guys just a query basically I have created the following program, which takes a word then shows the position of a certain character. Now what I need to do is then print out each characters position in the array: so for example T E S T 0 1 2 … |
| | the program that im having problems reads in a txt file sums both arrays of data, puts the sums into some equations and out puts the results in a txt file. [CODE]#include <iostream> // include all headers needed here #include <cmath> #include <cstring> #include <cctype> #include <fstream> #include <cstdlib> using … |
| | I have a program in were you enter numbers. each different # set you enter goes into an array ( section[] ) but now what I'm trying to do is add 2 different sections together. [code]for(int x = 0; x < stoppoint; ++x) { track = track + 1; if(section[x] … |
| | Okay, to start off my system is kind of an experiment on how well a dual hard-drive system performs differently from a single hard drive system. I have a 35 Gb drive that i placed windows vista 64bit on. Now the drive runs at 10k. Opposite that hd i have … |
| | Hi everyone, I have worked some more on my code and this time I am getting some error that I am not able to resolve. Please help me. The error says: "initialization skipped by case label." Please show me how to resolve this. Here is the code. The error has … |
| | Ok, I never really understood vectors and I have write a program that uses a vector of Employee references to store the company’s payroll. My program will load the payroll by reading a file (employee.dat) that contains one employee’s information per line. Each line of the file will begin with … |
| | I hsve developed this code I am having trouble with the Account manager to perform the task it meant to do when i put N for New customer it exits the program and i shouldnt can anyone hepl me with this problem [code] #include <iostream> #include <string> #include <cmath> #include …  |
| | hi people, i am able to make the following code work if i don't use a destructor: #include<iostream> using namespace std; class CVector{ public: int *x, *y; CVector(); CVector operator+ (CVector); CVector(int,int); // ~CVector(); private: }; CVector::CVector(){ x = new int; y = new int; *x=0; *y=0; } CVector::CVector(int a, … |
| | Some of the code has been omitted. I am trying to write a DFS function to traverse a maze. It will eventualy add the nodes to a tree that I will traverse once I get the DFS working. Currently it goes into an infinite loop and I cannot figure out … |
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