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  • Conversion char[] to char*

    - by sijith
    may be this is a sizzle question but please help void Temp1::caller() { char *cc=Called(); printf("sdfasfasfas"); printf("%s",cc); } char *Temp1::Called() { char a[6]="Hello"; return &a; } Here how to print Hello using printf("%s",cc);

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  • 3D coordinate of 2D point given camera and view plane

    - by Myx
    I wish to generate rays from the camera through the viewing plane. In order to do this, I need my camera position ("eye"), the up, right, and towards vectors (where towards is the vector from the camera in the direction of the object that the camera is looking at) and P, the point on the viewing plane. Once I have these, the ray that's generated is: ray = camera_eye + t*(P-camera_eye); where t is the distance along the ray (assume t = 1 for now). My question is, how do I obtain the 3D coordinates of point P given that it is located at position (i,j) on the viewing plane? Assume that the upper left and lower right corners of the viewing plane are given. NOTE: The viewing plane is not actually a plane in the sense that it doesn't extend infinitely in all directions. Rather, one may think of this plane as a widthxheight image. In the x direction, the range is 0--width and in the y direction the range is 0--height. I wish to find the 3D coordinate of the (i,j)th element, 0

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  • What is the point of Convert.ToDateTime(bool)?

    - by Paul Alan Taylor
    I was doing some type conversion routines last night for a system I am working on. One of the conversions involves turning string values into their DateTime equivalents. While doing this, I noticed that the Convert.ToDateTime() method had an overload which accepted a boolean parameter. First question? Under what circumstances could this ever be useful? I went a little further and tried to execute the method in QuickWatch. Either way ( true or false ), the routine returns an InvalidCastException. Second question? Why is this method even here?

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  • Currency Conversion and display fetched from Server

    - by user198725878
    I am fetching the in app purchase items for my app from my web server.the web-server gives the product title, description and price... Currently i am displaying the each product using the product title,description and price.Currently i am showing the currency in $. Now i am having the doubt that , can i display the prices as such?when i referred some URL, it seems that prices needs to be localized. So do i need to display the prices localized which is fetched from my-server? please let me know how should i proceed? Thanks a lot for stopping by..

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  • Date Time conversion

    - by Zerotoinfinite
    Hi All, I am getting datetime as 1/2/2010 11:29:30 which I am displaying in a gridview. and I want to convert it to "Feb 1, 2010 at 11:29". Please let me know how to convert it like this. Thanks in advance. Note: I am using asp.net with C#.

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  • how to do this conversion?

    - by kumar
    string mvi = Moneys.GetValue(8) as string; if (mvi == null) money.Currency= Convert.ToDecimal(""); /// I am getting exception Here if its null? else money.Currency= Convert.ToDecimal(mvi); /// Currency is Decimal money.Currency= Convert.ToDecimal(""); /// I am getting exception Here if its null? Can any body tell me how to do this? thanks

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  • Converting a const char* into a double

    - by Koning Baard
    I am trying to convert a const char* to a double precision floating point number: int main(const int argc, const char *argv[]) { int i; double numbers[argc - 1]; for(i = 1; i < argc, i += 1) { /* -- Convert each argv into a double and put it in `number` */ } /* ... */ return 0; } Can anyone help me? Thanks

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  • Converting a string into a double

    - by Koning Baard
    I am trying to convert a string (const char* argv[]) to a double precision floating point number: int main(const int argc, const char *argv[]) { int i; double numbers[argc - 1]; for(i = 1; i < argc; i += 1) { /* -- Convert each argv into a double and put it in `number` */ } /* ... */ return 0; } Can anyone help me? Thanks

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  • Converting Milliseconds to Timecode

    - by Jeff
    I have an audio project I'm working on using BASS from Un4seen. This library uses BYTES mainly but I have a conversion in place that let's me show the current position of the song in Milliseconds. Knowing that MS = Samples * 1000 / SampleRate and that Samples = Bytes * 8 / Bits / Channels So here's my main issue and it's fairly simple... I have a function in my project that converts the Milliseconds to TimeCode in Mins:Secs:Milliseconds. Public Function ConvertMStoTimeCode(ByVal lngCurrentMSTimeValue As Long) ConvertMStoTimeCode = CheckForLeadingZero(Fix(lngCurrentMSTimeValue / 1000 / 60)) & ":" & _ CheckForLeadingZero(Int((lngCurrentMSTimeValue / 1000) Mod 60)) & ":" & _ CheckForLeadingZero(Int((lngCurrentMSTimeValue / 10) Mod 100)) End Function Now the issue comes within the Seconds calculation. Anytime the MS calculation is over .5 the seconds place rounds up to the next second. So 1.5 seconds actually prints as 2.5 seconds. I know for sure that using the Int conversion causes a round down and I know my math is correct as I've checked in a calculator 100 times. I can't figure out why the number is rounding up. Any suggestions?

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  • Struts2 Converting Enum Array fills array with single null value

    - by Kyle Partridge
    For a simple action class with these member variables: ... private TestConverterEnum test; private TestConverterEnum[] tests; private List<TestConverterEnum> tList; ... And a simple enum: public enum TestConverterEnum { A, B, C; } Using the default struts2 enum conversion, when I send the request like so: TestConterter.action?test=&tests=&tList=&b=asdf For test I get a null value, which is expected. For the Array and List, however, I get and Array (or list) with one null element. Is this what is expected? Is there a way to prevent this. We recently upgraded our struts2 version, and we had our own converters, which also don't work in this case, so I was hoping to use the default conversion method. We already have code that is validating these arrays for null and length, and I don't want to have to add another condition to these branches. Is there a way to prevent this bevavior?

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  • Setting Nullable Integer to String Containing Nothing yields 0

    - by Brian MacKay
    I've been pulling my hair out over some unexpected behavior from nullable integers. If I set an Integer to Nothing, it becomes Nothing as expected. If I set an Integer? to a String that is Nothing, it becomes 0! Of course I get this whether I explicitly cast the String to Integer? or not. I realize I could work around this pretty easily but I want to know what I'm missing. Dim NullString As String = Nothing Dim NullableInt As Integer? = CType(NullString, Integer?) 'Expected NullableInt to be Nothing, but it's 0! NullableInt = Nothing 'This works -- NullableInt now contains Nothing. How is this EDIT: Previously I had my code up here so without the explicit conversion to 'Integer?' and everyone seemed to be fixated on that. I want to be clear that this is not an issue that would have been caught by Option Strict On -- check out the accepted answer. This is a quirk of the string-to-integer conversion rules which predate nullable types, but still impact them.

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  • Draw 15Km radius around point in Android

    - by Shani
    Hi, I want to draw a a circle of 15 KM radius around a point on Google Maps by using Android. In Android we only have MapView and MapViewController. How can I implement the drawCircle funciton provided in Google Map Circle example in Android.

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  • WPF - Translate a point relative to MainWindow to it's coordinates relative to a child control

    - by James Cadd
    Is it possible to translate a point relative to MainWindow to be relative to one of its child controls? For example, say a control's upper left corner was located at 500, 500 relative to MainWindow what code would convert that number to (0, 0)? I'd like the solution to be agnostic of the layout mechanism (i.e. not require me to parent the control in a Canvas and use the Top and Bottom methods).

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  • Android VideoView - Detect point of time in video

    - by Chris
    Hi all, I am using a VideoView to display a video. I am using setOnPreparedListener and setOnCompletionListener to do stuff before and after the video starts and ends. I was wondering how I could go about detecting some point of time in the video. For eg, say I want to write log to a file when the video has played for 10s. How can I detect the 10s mark? Thanks Chris

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  • Best way XML File handling bullet point •

    - by dbengals
    For an XML file I am creating I have data that contains a bullet • what is the best method for handling this in xml data? It opens in an XML editor and reads fine, but I cannot import the file via SSIS, I get an error regarding this point. <xmldata>• Bullet</xmldata> Renders fine, but cannot import with SSIS.

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  • The whole point of programming is creating abstractions

    - by Damien
    Hullo, this is Damien. I am new to programming and to StackOverflow community. Our professor once said that "the whole point of programming is creating abstractions." His explanation however went right over my head. Please explain the meaning of this sentence in simple words -- something that a noob like me can understand. Thank you!

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  • What directories do the different Application SpecialFolders point to in WindowsXP and Windows Vista

    - by Thorsten Lorenz
    Namely I have: Environment.SpecialFolder.ApplicationData Environment.SpecialFolder.CommonApplicationData Environment.SpecialFolder.LocalApplicationData I am unclear as to were these point to in Windows XP and/or Windows Vista. What I found so far is that the ApplicationData points to the ApplicationData Folder for the current user in XP and the roaming application data folder in Vista. I would also like to know if there are general guidelines on when to use which.

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  • Check if a Lat/Long point is on the GRoute

    - by Pavel
    I'm ploting a route between two points and I need to check if the route goes through a predefiend location. In the api, each GStep has a start and end points but the path doesn't have to be straight. Given a Lat/Long point, is there a way to check if it intersects with a route? -- Pavel

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  • RubyCocoa, what's the point?

    - by totocaster
    I was wondering what's the point of using Ruby (or even Python) in Cocoa application development other that not learning Objective-C (which is pretty simple language and will not take to more than few days to learn). I'm new to this and I'm interested why people do this? What are Pros and Cons.

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