Show a number in the MessageBox

This is a discussion on Show a number in the MessageBox within the Windows Programming forums, part of the Platform Specific Boards category; I found out a solution to put numbers in 2 textboxes, using a button to add these numbers and show ...

  1. #16
    Registered User
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    I found out a solution to put numbers in 2 textboxes, using a button to add these numbers and show the result in a label in C++ doing this. So a conversion to string is made as oogabooga said also:
    Code:
    double Number1 = double::Parse(textBox3->Text);
    double Number2 = double::Parse(textBox4->Text);
    double result = 0;
    
    result = Number1 + Number2;
    resultlabel->Text = result.ToString();
    I am using little of both C# and C++ to see the differences. My application is very dependant of fast calculations and thats why I really cant let go of C++ yet.

  2. #17
    C++まいる!Cをこわせ! Elysia's Avatar
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    You realize that using C++ dot net (that's what you do when using your fancy GUI) will be much slower than using Native C++, too, right?
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  3. #18
    - - - - - - - - oogabooga's Avatar
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    Console app?

    My previous post was mistaken. Sorry about that.
    At this point I would agree with Elysia's previous recommendation of a console application, especially if Coding is just learning C++. If I wanted a program to read in some numbers, do an extremely long calculation, and output a numeric result (perhaps to a file), I would definitely use a console. Good enough, so to speak.

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