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by: Jonas Prismesen |
last post by:
Hi!
I have string like this:
string expr = "123/(12*3)";
And I want to actually calculate the mathematical
expression in the string. Is there an easy way do it? Or
do I have to extract all the parts from the string, which
will be difficult since the expression will change in my
app..
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by: stanlo |
last post by:
hi to everyone, this is still a follow up of my project ,mathematical
expression.this project is meant to evaluate mathemtical expressions
with oparators,+,-,*,/.more than two operands can be done, eg it should
be able to do,1+9-45*7/12,or 4* 5+6*21.from reading and help from you i
have been able to write the program.but my problem is to process the
string of the input.i.e given for example an input string, 12+6*65/7,
you know i have to...
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by: tobimarq |
last post by:
hi all,
I wonder if the following is possible in php:
I want php to 'interpret' a string that contains (a simple kind of)
mathematical calculation, like
$var='25*3';
$result= (int) $var;
//according to the php manual, $result contains 25,
//but I want the result at the end to contain: 75
Is there a php function or construct, that does this?
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by: jacob navia |
last post by:
A function like strcpy takes now, two unbounded pointers.
Unbounded pointers, i.e. pointers where there is no
range information, have catastrophic failure modes
specially when *writing* to main memory.
A better string library would accept *bounded* pointers.
We would have then:
char *strcpyN(char *destination, size_t bound1,
char *src,size_t bound2);
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by: Zeng |
last post by:
Hello,
Please help!!! I've been stuck on this issue for months. I just wonder if
there is a way to programmatically evaluate expression
strings such as
( ( 3 + 5 ) / 2 ) > 4 --> this should return 0 or false( ( 3 + 6 ) / 3 ) >
( ( 5 + 3 ) / 4 ) --> this should return 1 or trueThanks for any comment or
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by: Dinsdale |
last post by:
I would like to compare a string value to a pre-determined list of
other strings. Is there a simple way to do this in one statements like
this:
if(strMystring.ToUpper() == ("STRING1"| "STRING2"| "STRINGX"))
{}
This syntax doesn't work (and in fact I'm not quite sure what this
statement really is saying) but I'd like to be able to do *something*
like this. One suggestion was to add the compare strings to an
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by: Bob M |
last post by:
If I define an expression or equation, how can I retrieve that expression as
string literal? I want to do this so that I could avoid repetitive typing
(or copy/paste/change) the same thing at two place. I try to demonstrate
the problem in the following code.
Bob M
<%@ Page Language="C#" %>
<script runat="server">
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by: aalam |
last post by:
Is there any function available in C/C++ libarary to integrate a mathematical expression.
Thanks in advance....
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by: jacek.strzelczyk |
last post by:
Hello,
I'm looking for a C library that provides the notation of n-
dimensional mathematical functions. Or is there any other way to
decode that kind of functions in C language?
Thanks in advance,
Jacek
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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: 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,...
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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: 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: 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...
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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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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