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by: Victor Irzak |
last post by:
Hello,
I have an ABC.
it supports:
ostream & operator <<
I also have a derived class that supports this operator.
How can I call operator << of the base class for derived object??? Is it
at all possible?
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by: matthurne |
last post by:
I'm doing a chapter 12 exercise from Accelerated C++ ... writing a
string-like class which stores its data in a low-level way. My class,
called Str, uses a char array and length variable. I've gotten
everything working that I want working so far, except for
std::istream& operator>>(std::istream&, Str&)
The way my Str class manages itself of course requires that the size
of the char array to store is known when it is allocated. The...
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by: Jason K |
last post by:
Let me preface this by saying this obviously isn't a C++ *language*
issue per se; rather probably an issue relating to quality of
implementation, unless I'm just misusing iostream...
I wrote a function to count lines in a large file that start with
a particular pattern. The file can contain large amounts of non-text
crap, which may make some lines very long (so using getline() with
a std::string isn't feasable). So I dug around looking...
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by: maadhuu |
last post by:
Hello,
I would like to know as to how you can print a file in the reverse order
,starting from the last character to the 1st .Can I use istream or ostream
classes for this ??Or is there any better way of doing this in C++ ?
Thanking you,
Maadhuu.
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by: tvn007 |
last post by:
Please help why this code not compile
I would like it to be something like this:
istringstream stringstreams(line);
stringstreams>>ptrstudent->bypassed>>ptrstudent->name>>ptrstudent->midterm;
stringstreams>>ptrstudent->quiz>>ptrstudent->final>>ptrstudent->testname;
///////////////////////////////////////////////////////////////////////////////////////////////////////
#include <iostream>
#include <string>
#include <fstream>
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by: Peteroid |
last post by:
These don't work (I'm using VS C++.NET 2005 Express with clr:/pure syntax):
ostream& operator <<( ostream& output, String^ str )
{
output << str ; //compile error
return output ;
}
istream& operator >>( istream& input, String^ str )
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by: Colonel |
last post by:
It seems that the problems have something to do with the overloading of
istream operator ">>", but I just can't find the exact problem.
// the declaration
friend std::istream & operator>(std::istream & in, const Complex & a);
// the methods correspond to the friend
std::istream & operator>(std::istream & in, const Complex & a)
{
std::cout << "real: ";
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by: john |
last post by:
I am reading TC++PL3 and on page 644 it is mentioned:
"Flushing an istream is done using sync(). This cannot always be done
right. For some kinds of streams, we would have to reread characters
from the real source - and that is not always possible or desirable.
Consequently, sync() returns 0 if it succeeded. If it failed, it sets
ios_base::badbit (21.3.3) and returns -1. Again, setting badbit might
trigger an exception (21.3.6). A sync()...
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by: kamikaze04 |
last post by:
Hello.
I have a very newbie question about Streams. The situation is that i have a function (that i cannot modify it's definition/call):
public void F1(istream & in){
while( ...) {
in >> value
do stuff with value;
}
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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