49,766 Topics
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| | I am trying to use the size of an array to determine how many entrys are in the array as follows sizeof(array)/sizeof(array type) = number of elements in the array. I then wish to use this to add more data to the array as follows array[sizeof(array)/sizeof(array type)] = new Object(object … |
| | I'm trying to write a program that uses vector to store the grades for the number of students entered.But i seem to be getting some problems with my code. I am able to enter the number of students, but when it asks for the grades, the program exits. I hope … |
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| | Hi everybody, Please excuse the noob question as I am new to STL in C++. I am trying to write a very basic program which uses iota. However my compiler is complaining that iota does not exist in algorithm. Some other forums suggested including <backward/algo.h> as iota could have been …  |
| | Define a base class person that will contain universal information, including name, address, birth date, gender and identification (student, worker etc). Derive from this class the following classes: Student Worker Student_worker Add variable school to student and company to worker class. Write a program that asks user to input information … |
| | hi everyone!!! I am trying to write a code for list of names to be sorted in alphabetical order. can anybody please tell me what I am doing wrong. and one more thing , is it possible to bubble sort a names in unspecified number of entries? and if it … |
| | I have to create a program that will prompt a user radius and keep adding them until user says no. Then, the program gotta able to hold those numbers and calculate two things: Surface area and Volume. The program also gotta able to Sort the numbers by its volume(low to … |
| | #include<iostream> using namespace std; #include<string> #define INT_MAX 100000 #define INT_MIN 0 using namespace std; class Automobile { public: Automobile(); void read(); bool is_cheaper_than(??????) const; bool better_mileage_than(???????) const; bool better_finanace_than(??????) const; void print() const; private: string name; float price; float mileage; float finance; }; Automobile::Automobile() { name=" "; price=INT_MIN; mileage=INT_MAX; } … |
| | I'm getting an error with this code. Both the findMax and findMin lines in main say "Invalid conversion from 'int' to 'int*'". What does it mean? #include <iostream> using namespace std; int findMax(int[],int); int findMin(int[],int); int main () { int max, min, x; findMax(max,x); findMin(min,x); return 0; } int findMax(int … |
| | Hi Folks, Here is another noob question. I am trying to write a simple predicate for the find_if function in STL. Here is my code #include<iostream> #include<vector> #include<algorithm> #include<iterator> using namespace std; class InRange{ const int& low; const int& high; public: InRange(const int& l, const int& h): low(l), high(h){} bool … |
| | please tell what am I doing wrong. #include <iostream> using namespace std; int main() { char name[3][30]; int i, j; for(i=0;i<=2;i++) { cout << "Please enter name: "; cin >> name[i]; } for(i=0;i<=1;i++) { for(j=i+1;j<=2;j++) { char temp; if(name[i] > name[j]) { temp = name[i]; name[i] = name[j]; name[j] = … |
 | Hello, I have 2 vectors, and I'm trying to search/scan the first vector for the second vector. Let's say I have this vector/Matrix: M1 = 0 1 1 0 0 1 1 1 1 0 1 1 0 0 0 1 M2 = 0 1 0 1 Then I will … |
| | Hello everybody, I am trying to teach my stl and after writing some basic programs I have hit a road block. I have an iterator which I am trying to pass to a function template Here is my function template template <class T> void display(typename vector<T>::iterator start, typename vector<T>::iterator end){ … |
| | i have tried to write this hexdump code for dumping the contents of a tex file. #include <iostream> #include <fstream> #include <string.h> using namespace std; int main() { string line; string finline; char infile[100]; char ofile[100]; char chars[750]; cout<<"Enter input file: "; cin.ignore(); cin.getline(infile, 99); cout<<"Enter output file: "; cin.getline(ofile, … |
| | Inside the infile.txt, I'm suppose to convert into outfile.txt. Unforunately, I'm unable to get the correct aglinment for outfile. As you can see, France and Vietnam have an extra "\t". char ch; switch (n) { case 'F': stud.type = n; infile >> stud.st.fs.country; infile.get(ch); infile.getline(stud.st.fs.name, MAX); break; case 'S': stud.type … |
| | I'm at an absolute complete loss with this. I'm a using a pointer-pointer to "remember" the last node of a linked list so a function in the loop can add another node and then return the address of that new node so it's known for the next loop. Sounds easy, … |
| | i have this c++ code and i wondered how ot would be in c #include <vector> // for vector #include <sstream> // for stringstream #include <iostream> #include <string> using namespace std; int main() { stringstream ss; string input, temp; vector<string> comand; cout << ">: "; getline(cin, input); ss << input; … |
| | Hi everyone, Again, I'm just trying stuff out to try and learn a bit more but here goes... I created a small Logger util - I included the pthread library and added a mutex lock in each of the "write*" functions, tested it by running a few instances of a … |
| | Hello, where is the problem in this code? it seems ok but i get "unresolved external symbol " error" for Server::SetMode() :/ damn // Server.h class Server { public: Server(); static const int MODE_NONE = 1; static int SERVER_MODE; void SetMode(); }; // Server.cpp #include "Server.h" Server::Server() { } void … |
| | I wrote this code to change all lowercase letters in a string to uppercase. That works, but I also want it to go the other way around and nothing I tried is working. #include<iostream> #include<string> #include<cctype> using namespace std; string change(); int main() { change(); return 0; } string change() … |
| | NEED help with this code, i need to put the code in place of(??????) The code is suppose to enter the car's information and it compares which car has best finance mileage and cost of car. #include<iostream> using namespace std; #include<string> #define INT_MAX 100000 #define INT_MIN 0 using namespace std; …  |
| | I just develop a simple C++ program which gets data from user and make in database form and save it to file... compile it and share your review... /*simple Database application Programmed by Piyush gautam email-piyush3dxyz@gmail.com */ #include <iostream> #include <conio.h> #include <fstream> #include <stdio.h> using namespace std; struct work …  |
| | #include <iostream> #include <iomanip> #include <string> using namespace std; // Constants const float RESLINEFEE = 22.42; const float RESperGALLONfirst10000 = 2.42; const float RESperGALLONnext13000 = 3.22; const float RESperGALLONover23000 = 4.03; const float COMLINEFEE = 22.09; const float COMperGALLON = 2.65; const float INDLINEFEE = 18.41; const float INDperGALLONfirst200000 = …  |
 | Hello I have this problem..I realise I am trying to I am calling function like this...a reference to E is passed in? B = D.sum1(E); MatrixClass MatrixClass::sum1(const MatrixClass &rhs) const//function to add elements of one MatrixClass to { //another and return the new MatrixClass MatrixClass C; if(this->dataptr == rhs.dataptr) { … |
 | [CODE]#include <iostream> using namespace std; int main() { char exit; cout << "Exit? Y / N " << endl; cin >> exit; if ( exit == 'Y' || exit == 'y' ) { } if ( exit == 'N' || exit == 'n' ) system("PAUSE>nul"); else { } } [/CODE] … |
| | #include <iostream> #include <fstream> #include <string> using namespace std; int main () { string cosid1, cosid2; int no_cos=0, nostu1=0, nostu2=0; double score, total_1=0, total_2=0, avg_1=0, avg_2=0, avg_group1=0,avg_group2=0; ifstream group1, group2; ofstream outgroup; group1.open ("group1.txt"); group2.open ("group2.txt"); if (!group1 || !group2) { cout<<"Unable file"<<endl; cout<<"Programs terminates"<<endl; } outgroup.open("totalgroup.txt"); outgroup<<"Course ID"<<'\t'<<"Group No"<<'\t'<<"Course …  |
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 | i'm making this function that replaces single slashes in a path with doubles slashes. It works for everything but slashes because I gotta use doubleslashes to specify a single slash so how do I refer to double slashes. QString AddDoubleSlashtoPath(QString Path){ QStringList splitup=Path.split("//") ;/*supposed to be a single slash*/ QString … |
| | hi everyone ! i am trying to write a program in c++ that can play video files(mp4,avi,mkv)...... but i have very little knowledge of handling video . It would be a great help to me if anyone could guide me through this or provide any tutorial links. Thanks in Advance … |
| | hello guys.. I am trying to make a simple tab control dialog-based application. Well I succeeded to do so. But I am facing problem in recieving data. I have put an EditBox onto the dialog (used for the *Tab Client Area*) but it is not giving the values back. Here … |
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