51,593 Topics
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| | I don't know what i'm missing, but I keep getting the error in the poly_tst file when trying to compile that says 'expected primary-expression before ']' token. According to my book I'm writing everything correctly. Here is my class file function (poly.h) void setcoeff(Term); Here is my implementation file definition …  |
| | Hi, i am porting my applicaiton from vs6.0 to vs2005 i am getting problem enum ,it is not getting integral value Could somebody help in fixing this issue, thanks in advance [code]enum Keys { classesRoot = HKEY_CLASSES_ROOT, currentUser = HKEY_CURRENT_USER, localMachine = HKEY_LOCAL_MACHINE, currentConfig = HKEY_CURRENT_CONFIG, users = HKEY_USERS, performanceData … |
| | ok so im trying to implement a stack using vector and i have to access the last element of the vector el, i dont know if its right and also how would i implement the pop function of the stack using vector el_t stack::topElem() { el_t n; if(isEmpty()) cout <<"stack … |
| | i have a string which is giving me problems. when i put it into a textfile, it puts the cursor onto the nextline. i assume because there is a \n at the end of the string, but when i cout the string, the newline character isnt there (well, the console … |
| | I need to take my last C++ class over one more time and just trying to get a head start on the programs we had been assigned. I will provide the instructions and was wanting to get any feedback on what I should get rid of my current program and … |
| | I'm writing a polynomial project that requires me to utilize classes. Problem is, I have the polynomial stored in two arrays in the class, one for coefficients (float coefficientholder[10]) and one for exponents (int exponentholder[10]), and get functions (at least according to my book) are simply consisting of return commands … |
| | I have another question regarding activating of an automatic door: three sensors front pad, rear pad, and door; they determine weather the door is activated or not. front pad=0 empty front pad=1 occupied rear pad=0 empty rear pad=1 occupied door=0 closed door=1 open there are situations when the door is … |
| | Hey, I'm having some troubles reloading a new png in place of my old one on my window using the GDI+ SDK. Here is my WM_PAINT message: [CODE]case WM_PAINT: { BITMAP bm; PAINTSTRUCT ps; //Painting the Background HDC hdc = BeginPaint(hwnd, &ps); HDC hdcMem = CreateCompatibleDC(hdc); HBITMAP hbmOld = (HBITMAP)SelectObject … |
| | Hi...I wrote a proggy that replace some words in text file there is a condition that if somebody write in the texbox ","...all sentences change into plural form... [CODE]if (systemTEXT->Text->Contains(",")) {token == 1;}[/CODE] it works great...text contains "," - it means plural forms are needed..token=1 [CODE] if (linia->Contains("system_token")) {poprawka = … |
| | This is the line of code that I am getting an error with. [CODE]mtx[cIndex(bitNum)] & = ~(1 << bIndex(bitNum));[/CODE] The error code is: expected primary-expression before â=â token I think I am missing some '(' and ')''s. Thanks! |
| | So i've been working on this for while and i keep getting error after error, after i posted here last i cleaned it up but here is my latest debug error. I feel like that my code and algorithms are all there but im messing up in one of my …  |
| | Okay, so I'm a 7 month experienced programmer in C++, and now is the time when I am having the most trouble. So my Professor wants us to create a program that asks the user to input a sequence of numbers and then convert those numbers into outputs of "how …  |
| | Ok so im trying to implement a stack using vectors in C++ i just want to know if the following implementation code makes sense, this is just the implementation file, the client file is working fine but when i run the program it doesnt work so i believe it has … |
| | I really need help in writing this program for homework. 1. Round the average for each student to the nearest integer. 2. Add code to print out an appropriate message for each student. (given in prologue comments) 3. Add code to calculate the highest student average, and the lowest student … |
 | Okay. I have said code: [code=C++] #include <iostream> int main() { std::cout << "This is a native C++ program\n" << std::endl; return 0; }//main [/code] How would I compile this from a standard DOS command line? I've searched all over google, and have yet to find an answer that explains … |
 | I have a flow on how to do this program but I need so help.[COLOR="Red"] [B]PLEASE GIVE ME A HINT NOT THE ANSWER. [/B][/COLOR] [B][COLOR="Red"]THE FLOW CHART IS IN THE ATTACHMENT. PLEASE CHECK IT OUT BEFORE GIVING HINTS[/COLOR][/B] [CODE]/*************************************************** The following program will take user's input and check whether it … |
| | Hello, I would like to know what am I missing in this program to be getting that error. Thanks in advance! Error is [B]error C3861: 'setprecision': identifier not found[/B] [CODE]#include <iostream> using namespace std; int main () { int numFloors=0, numRooms=0, numOccupied=0, totRooms = 0, totOccupied = 0, totUnoccupied=0; double …  |
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| | Hi all. I am trying to create a program to take in records of a companies payroll. I get the data then write it to a binary file. When I want to delete a record I ask for the specific timesheets name and the employee ID then read the file … |
| | can anyone please show me an example?  |
| | I am a puzzled regarding the purpose of the countDown = coundDown -1; part of this program code. I mean I do not know why I should subtract the countDown by 1. What is it for??? Here is the program source code, the one highlighted is the one I'm confused …  |
| | I've read explanations but to no avail. Could any one offer some explanation of what the difference is and what the benefits are of typedef, struct and classes? |
| | Hey, I was wondering what the code was to open a program using C++? so basically writing a program that opens a program. any help would be great :) |
| | Most examples of the select() function use a 0 to 'max file descriptor value' approach: [CODE] fd_set master_fd_set; FD_ZERO(&master_fd_set); fd_set temp_fd_set; FD_ZERO(&temp_fd_set); int max_fd = the_max_file_descriptor_value_of_descriptors_interested_in; ... temp_fd_set = master_fd_set; ::select(max_fd, &temp_fd_set, NULL, NULL, NULL); for (int i = 0; i <= max_fd; ++i) { if (FD_ISSET(i, &temp_fd_set)) { // … |
| | Here is the program that I have to make: Write a program that asks the user to enter the amount that he or she has budgeted for a month. A loop should then prompt the user to enter each of his or her expenses for the month, and keep a … |
| | The class dateType in my program was designed to implement the date in a program. However, the function and constructor don’t check whether the date is valid before storing. … rewrite the definition of the function setDate and constructor so that the values for month, day, year are checked before … |
| | Hi i made a program for conversion decimal to binary number ... but i need to convert the big dottef number into dotted binary like this For example 10.10.0.13 is <00001010.00001010.00000000.00001101> 8-bit of every integer .. This is making me confuse how to make it ? my conversion code is … |
| | Hi . I am coding the following program i will give the string my self and one is already given. given string = {a,b,c,d,3,f,g,h,i,6,j,k,l,m,9,n,o,p,q,2,r,s,t,u,v,w,x,y,z }, you are required to process an input string possibly less than 80 characters long, and an input +ive integer to encrypt the message: for example: … |
| | Hi, I am working on a piece of OOP which needs to be ran entirely by classes, by that meaning the main function should only create the first class and the rest of the program ran by member functions of various classes. Part of this task requires me to keep … |
| | I m work'n on a project to control the cursor with my finger. I've used openCV in VC++ to track my finger but have no idea how to link the mouse with my finger i.e control the mouse motion with finger. can someone please....!! tell me how do you control … |
| | Hi there, i am desperately trying to compile the MySQL++ library header & cpp files in order to create the actual lib. I do follow the exact instructions given in the ReadMe for MinGW. [ICODE]Prerequisite: MySQL C API DLL Import Library ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Before you can build MySQL++ with MinGW, you …  |
| | I am trying to use an exported function from a C++ dll with the below signature, from within my C# program. [CODE=C]extern "C" __declspec(dllexport) BOOL S_USB_Memsize(unsigned char *buffer)[/CODE] In my C# code , I am declaring the use of this function with: [CODE=C][DllImport("RSTUSBIF.dll",CallingConvention = CallingConvention.Cdecl)] public static extern int S_USB_Memsize(IntPtr … |
| | Hello, first I want to say I'm a total noob to C++ and Visual Studio and MFC. Before this I studied Java in school. Anyway I'm required to learn MFC for work and I've been going through a reference book my supervisor has and I've run into an error that …  |
| | how can i do this ? the error was lvalue required. [code]#include<iostream.h> #include<sting.h> #include<conio.h> #include<stdio.h> struct movies_t { char title[50]; int year; } mine, yours; void printmovie (movies_t movies_t); main () { clrscr(); struct movies_t mine, yours; mine.title="The Curious Case of Benjamin Button"; mine.year=2008; cout<<"Enter title:"; gets(yours.title); cout<<"Enter year:"; cin>>yours.year; … |
 | Hi, I want to learn mfc, but as I read in wiki mfc is not included in visual express editions, IS THE ONLY WAY TO LEARN MFC is buying visual studio software? are there any other solutions?  |
| | If I want "3x²" to be output in my program, and I have a variable holding the "3" as float coeff and one holding the "2" as int expn, how do I go about displaying the polynomial using cout? Do I need #include<cmath> as well? thanks in advance. Jess  |
| | [CODE] #include <iostream> #include <iomanip> using namespace std; int c0=0,c1=0,c2=0,c3=0,c4=0,c5=0,c6=0,c7=0,c8=0,c9=0; class array{ private: int arr[10]; public: friend istream& operator >> (istream& in, array& a) { cout<<"Enter 10 value in the array!\n\n"; for (int i=0; i<10; i++) { cout<<"Enter the value at ["<<i<<"]: "; in>>a.arr[i]; } } void check_count (void) { … |
| | I would like to convert a C++ string that the user inputs to a c string. The problem is I have no idea how long the c++ string will be and i know the c string has to have one extra space for \n. Is there a way to apply … |
| | Can I declare an array variable as "int a[]", as in an array with no specified amount of elements to hold initially (to be determined later with a index variable)? I am writing a program that relies on a file whose contents are read into the array, but the file's … |
| | I am beginning C++ programmer, I have been taking my c++ class for about 5 months now and this is the first time I have been completely stumped and I know for a fact it wont be the last. My professor assigned an assignment for us to find the mean, … |
| | Write a C++ program that declares an array alpha of 50 components of type double. Initialize the array so that the first 25 components are equal to the square of the index variable, and the last 25 components are equal to three times the index variable. Out the array so …  |
| | hey guys. i have a very simple programming assignment. i have a little experience in c++ but the code that im using is not working. the assignment is to use an array to enter 10 numbers and then print them out in reverse order. the following code that i am … |
| | Basically I need to writed a program that asks for a double and if the user inputs something keep going, but if the user just presses enter then the program should end. The problem is i can't get it to do anything after the person presses inter eg double value; … |
| | Hi. I was wondering if someone could help me out with a project. The assignment says to call a void function called InsertIntoArray passing the array, the entry the user entered and place the positive integer into the correct element of the array so that the array is always in … |
| | am new to c++, and am having trouble with if else statement for this code i am writing a program that makes the computer guess a number you the user has choosen my program works fine, but when i get in trouble is when my range gets down to zero … |
| | beginning in c++, i have a question of a recent program for this program i am trying to create a game where the computer try's to guess a number 1-100 that the user has chosen and i have it running good. but where i have a problem is at the … |
| | Im trying to make a C++ program to calculate the resistance in a parallel electric circuit. The formula is Total = 1 / (1/resistor1)+ (1/resistor2).... + (1/resistorN) I have made the program however when I compile it it has the "linker error" Can you please help me spot the mistake … |
| | How do I prevent holding when reading stdin? I'm creating a program with glut that uses the terminal for input and using fscanf() is holding up the process. How can I check the stream before calling fscanf()? |
| | I'm having trouble reading in values from a file. I know how to get all of the values in the file, but I only need some of them. This is my code (a snippet) so far. [CODE] ifstream myStream( file ); // file is the file name . while (true) … |
| | Got a code failiure. I tried making a code that does this. Grade calculator. Assume max points are 300. make the user submit 3 numbers between 0-100 and have them added together and divided by 300 to get a decimal to the possible nearest Hundredth or whole number. 3 numbers …  |
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