[operator] Forum Topics

Hi All, In below code when class a object is assigned to class b by returning object through factory method i observed assignment is not happening properly and after assignment still class b's object points to NULL object only. *cobj=rhs;//it gives NULL object However below statement works perfectly when b …

Hi All, After compiling below code , I am getting below error. error: cannot convert a* to b* in assignment. it seems to be assignment doesn't work with pointers . Can anybody throw some light on this? i tried to use unique_ptr by transfering the ownership from a to b …

Hi All, in below class i wanted to have two friend function(overloading) one with default argument and other is without default argument. but during compilation it gives error. could you let me know how to fix (overload) this by not changing the function name , argument type or number of …

i'm a newbie in java and i got an assignment to do and i don't know how to start ... the problem is: Write a program that will compute for the product of two numbers without using the * operator.. Sample Output: Enter Num1 :___ Enter num2 :___ Product is …

Hi, I have made a class and have an overloaded ostream operator method in it... However it tells me: "overloaded 'operator<<' must be a binary operator (has 3 parameters)." Can someone tell me how to fix this? Thank you! I have included some of my code: class Element { private: …

Hi Guys, In below code you can see that i am able to execute the functionality of class a , inside the class b through composition and object of b can be used to call the methods declared inside the a class. #include <iostream> using namespace std; class a { …

Hello. I have a list like this: mylist = [7, "+", 2, "+", 1] I want to take them out of the list inorder to run the operation and get the real result; something like this: result = 7 + 2 + 1 So the result variable will be set …

I have the following struct definition: struct finfo { string filename; long fsize; bool operator() (finfo i, finfo j){return (i.fsize > j.fsize);} } fstruct; And the following vector definition: vector<finfo> fdata; In the code I use the following statement to sort the vector elements by fsize: sort(fdata.begin(),fdata.end(),fstruct); This works perfectly …

Hey guys, Having some difficulties understanding why my OR || operator is not working... First part is BOOLEAN and it is working Second part is STRING and it is working, it returns the desired value What could it be ? <?php if(($oferte->isOrdered($oferte->CleanSapStyleNumbers($oferta->VBELN)) == false) || ($oferte->OfertaValida($oferte->CleanSapStyleNumbers($oferta->VBELN))->valabilitate == "VALABILA")): ?> some …

Good morning, so I'm hoping anyone can help me, I'm planning this app, but I'm still searching if it's possible to be done or not. My question is the following: Imagine I'm in Spain, and I would like to get all the Network Operators in Spain. Is it possible to …

can someone explain me how this operator work? i just need some hit to clearify my confusion on this... thanks

Hi, While executing below code i am getting error like "memory clobbered before allocated block" and due to this assignment is not happening. could you let me know what can be reason for the same. I do understand it is not good to use raw pointer but in current scenario …

I'm writing a program that works with two sets of numbers put into arrays. The program uses overloaded + and - operators. Array one = 2 7 4 2 9 7 Array two = 2 9 8 9 1 10 12 The output should be: For +, New Array = …

Dear Kind DaniWebbers, I am trying to overload the fstream operators (ofstream/ifstream), so that I can save a class to a 'Binary' file and also display it with cout. But the ways in which each need to be implemented is different. Please can you show me how to define different …

Hello, I have a particular set up of cast operators and constructors which is leading to a compile-time ambiguity error. I am wondering if somebody can explain why this is happening and what can be done to fix it. For example, here we have 2 classes: class A { int …

#include <iostream> using namespace std; template<class T> class MyClass { private: T data; public: MyClass(T data) { this->data = data; } }; template<class T> bool operator< (const MyClass<T> & a, const MyClass<T> & b) { return (a.data < b.data); } int main() { MyClass<int> x(1); MyClass<int> y(2); if(x < y) …

Hi All, I have doubt in my mind regarding declaration of cin and cout object . As per my understanding cin and cout both object are accessible in main then they shouldn't have protected.in below code snippet i have overloaded both input and output operator and while giving new name …

1. #include<stdio.h> #include<conio.h> int main() int a=10; printf("%d%d%d",a,a++,++a); getch(); return 0; } o/p:12 11 11 #include<stdio.h> #include<conio.h> int main() { double a=5.2; if(a==5.2) printf("equal"); else if(a<5.2) printf("less"); else printf("high"); getch(); } o/p: less Can any one give me explanation for the above outputs.....

I've been reading through this introductory book on Python, and I've been following along fairly well. Compared to C++, Python seems to make more sense to me. That is, until I reached a section on Logical Operators. I don't completely understand what I just typed in to IDLE, and the …

The foll code gives o/p as 2310103 28 Now my doubt is why here 10 is printed two times although i m passing t=6 for the d parameter?? #include <stdio.h> #include <string.h> int f(int a, int b, int c,int d,int e) { printf("%d%d%d%d%d \n",a,b,c,d,e); return a+b+c+d+e; } main() { int …

Hi, I've been learning about the std::copy function in the <algorithm> header and I'm stuck on this exercise that I gave my self. Let's see the code snippet first: #include <iostream> #include <vector> #include <algorithm> #include <iterator> using namespace std; ostream& operator<<(ostream& os, const int p_val) { os.put( p_val*2); return …

int m= i++ || ++j && k--; where i=2, j=3, amd k=5; acooridng to me, it will be executed left to right and then values of m=1, i=3, j=3 and k=5. but i have seen that precednace of && is more than || , than so how this expression is …

I have two containers with the type of *A* A<string, double> s1; A<string, bool> s2; So I wrote the *A* class with the necessary functions and I used a template<class T, class E> for it. It has a function that returns a value of *E*, in my case, it returns …

Pk, so here's the code I'm running for a checkboxlist object public void regSubjects(object sender, EventArgs e) { int courseCount = 0; for (int i = 0; i < coursesFound.Items.Count; i++) { if (coursesFound.Item[i].Selected) coursesCount++; } if ((courses < 4) && (courses > 6)) clabel.Text = string.Format("Choose between 4 - …

code part1: name1="rahul" name2="rahul" code part2: name1=[1,2,3] name2=[1,2,3] If I run the following code: print name1 is name2 I get "True" for code part1 and I get "False" for code part2 why? why the "reference" is same for name1 and name2 in "code part1" and different for name1 and name2 …

I'm making a class for boolean expressions, a simpler version of bool. I need three operators, one for AND, one for OR and one for NOT. I can easily make **+** for OR, by overloading, but how can i declare **.** for AND and **'** for NOT? Can i even …

I am just learning Xpath. How to mix 2 or more xpath validtions into a single line. On my page, I have 2 different tables under hthe //body tag. I want to validate two td s that exist on these 2 different tables. IsElementPresent is my own method. It uses …

I have been told it is good to overload the stream extraction operator to load data from a file. Would I simple use this in my class: friend ifstream &operator>>( ifstream &input, Class &C ) { input >> C.variable1 >> C.variable2 >> C.variable3; return input; } What are the advantages …

---------------------------------------------TSet.h------------------------------------------------------ #include <iostream> using namespace std; template <class V> class TSet { public: TSet(); TSet(int size); ~TSet(); void add(V new_item); void remove(V item_to_remove); int num_of_items(); bool isFull(); bool is_item_in_set(V item); friend bool operator==(const TSet<V>& left, const TSet<V>& right); friend bool operator!=(const TSet<V>& left, const TSet<V>& right); friend ostream& operator<<(ostream& outs,const …

Hi, I am just trying to do some program on arithmetic expression parsing. So i want to store my operator precedence table in the program somehow. I could use a multidimensional array, but that would be inefficient i guess. Another idea i have is to use a HashTable, where the …