473,811 Members | 2,665 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

can not print a <pair>

C++ Primer 4/e says, every pair has 2 members named <firstand <lastbut
g++ refuses to accept so. I have just created a pir and trying to print
its both members:
#include<iostre am>
#include<string >
#include<utilit y>
int main()
{
std::pair<std:: string, intmy_pair;
std::cin >my_pair.firs t >my_pair.last ;

std::cout << my_pair.first << "\n"
<< my_pair.last << "\n";

return 0;
}
========= OUTPUT ==============

/home/arnuld/programs $ g++ -ansi -pedantic -Wall -Wextra test.cpp
test.cpp: In function ‘int main()’:
test.cpp:12: error: ‘struct std::pair<std:: basic_string<ch ar,
std::char_trait s<char>, std::allocator< char, int>’
has no member named ‘last’
test.cpp:15: error: ‘struct std::pair<std:: basic_string<ch ar,
std::char_trait s<char>,std::al locator<char, int>’ has no member named
‘last’ /home/arnuld/programs $
--
http://lispmachine.wordpress.com/
Nov 22 '07 #1
1 1840
On Thu, 22 Nov 2007 12:07:00 +0500, arnuld wrote:
C++ Primer 4/e says, every pair has 2 members named <firstand <lastbut
g++ refuses to accept so. I have just created a pir and trying to print
its both members:
... [SNIP]......

I am so SORRY, I messed up the variables and mebers names in example in
section 10.1 of C++ Primer 4/e. g++ is right :), There is no memeber
named last, there are 2 members, <firstand <second.

I apologize for messing up.

--
http://lispmachine.wordpress.com/
Nov 22 '07 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

7
9152
by: ma740988 | last post by:
Consider: # include <iostream> # include <string> # include <map> # include <bitset> # include <vector> using namespace std;
3
7550
by: Gary Wessle | last post by:
Hi is it ok to do this? if not, then how for (vector<pair<char,double::const_iterator it = v.begin(); it != v.end(); ++it) switch (*it->first){... thanks
6
1519
by: asdf | last post by:
It is best to show me some examples. Thanks a lot.
2
7286
by: subramanian100in | last post by:
Consider the following piece of code: #include <iostream> #include <fstream> #include <vector> #include <string> #include <utility> #include <iterator> #include <algorithm> int main()
18
2513
by: subramanian100in | last post by:
Consider a class that has vector< pair<int, string>* c; as member data object. I need to use operator>to store values into this container object and operator<< to print the contents of the container. I have written both these operators as non-friend functions.
9
3726
by: shaun roe | last post by:
Question about pointer-to-data members I have a deeply nested loop, the innermost bit looks a little like this: for(it(vec.begin(), end(vec.end()), it!=end;++it){ if (global == 0){ myObj = it->func().second->anObj(); } else { myObj = it->func().first->anObj(); }
3
2956
by: eiji.anonremail | last post by:
Hi folks, I have a compile problem on linux, and maybe someone has an idea: #include <map> #include <iostream>
0
9734
marktang
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...
0
9607
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
1
10408
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
1
7673
isladogs
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...
0
6895
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5561
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
1
4346
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
2
3874
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
3026
bsmnconsultancy
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...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.