Compile Time V S Runtime Error
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Compile Time Error And Runtime Error In C#
a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What is the difference between run-time error and compiler error? [duplicate] up vote 14
Compile Time Error Definition
down vote favorite 7 This question already has an answer here: Runtime vs Compile time 19 answers In one of my prof slides on ploymorphism, I see this piece of code with a couple of comments: discountVariable = //will produce (DiscountSale)saleVariable;//run-time error discountVariable = saleVariable //will produce //compiler error As you can see, it says in the first casting statement that it'll produce run-time error and in the other one run time errors in java it says it'll produce compiler error. What makes these errors? and how they differ from each other? java compiler-errors share|improve this question edited Nov 16 '12 at 21:10 The Unfun Cat 4,25374065 asked Feb 27 '12 at 20:31 AbdullahR 1982414 marked as duplicate by assyliasjava Users with the java badge can single-handedly close java questions as duplicates and reopen them as needed. Jan 26 at 17:52 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. 15 Come on guys. The guy is trying to learn, downvotes are unnecessary. –JohnFx Feb 27 '12 at 20:35 3 Doesn't matter if it has addressed my example or not, what really matters is that I got the answer clearly. That guy explained it in a simple way that can be easy to understand to a naive programmer like me. –AbdullahR Feb 27 '12 at 20:54 Did you read the stackoverflow.com/faq ? –user647772 Feb 27 '12 at 21:00 Thank you AbdullahR, I hoped that from my example you could comprehend the difference and extrude the information you needed for your homework without me handing you the answer you need for yo
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers difference between compile time error and runtime error in c# or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x runtime error vs compile error c++ Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only error of intent takes a minute: Sign up Runtime vs Compile time up vote 179 down vote favorite 171 Can anyone please give me a good understanding of whats the difference between run-time and compile-time? compiler-construction runtime compile-time share|improve this question edited Oct http://stackoverflow.com/questions/9471837/what-is-the-difference-between-run-time-error-and-compiler-error 31 '09 at 13:35 e-satis 250k82236286 asked May 10 '09 at 21:06 devforall 1,807112641 add a comment| 19 Answers 19 active oldest votes up vote 253 down vote accepted The difference between compile time and run time is an example of what pointy-headed theorists call the phase distinction. It is one of the hardest concepts to learn, especially for people without much background in programming languages. To approach this problem, I find it helpful to ask What invariants does the http://stackoverflow.com/questions/846103/runtime-vs-compile-time program satisfy? What can go wrong in this phase? If the phase succeeds, what are the postconditions (what do we know)? What are the inputs and outputs, if any? Compile time The program need not satisfy any invariants. In fact, it needn't be a well-formed program at all. You could feed this HTML to the compiler and watch it barf... What can go wrong at compile time: Syntax errors Typechecking errors (Rarely) compiler crashes If the compiler succeeds, what do we know? The program was well formed---a meaningful program in whatever language. It's possible to start running the program. (The program might fail immediately, but at least we can try.) What are the inputs and outputs? Input was the program being compiled, plus any header files, interfaces, libraries, or other voodoo that it needed to import in order to get compiled. Output is hopefully assembly code or relocatable object code or even an executable program. Or if something goes wrong, output is a bunch of error messages. Run time We know nothing about the program's invariants---they are whatever the programmer put in. Run-time invariants are rarely enforced by the compiler alone; it needs help from the programmer. What can go wrong are run-time errors: Division by zero Deferencing a null pointer Running out of memory Also there can be errors that are detected by the program itself: Trying to open a file that isn't there Trying find a web p
runtime and compile time?UpdateCancelAnswer Wiki6 Answers Nitin Abhishek, hobbyist, RC aircraft modellerWritten 103w agoAlmost all computer programs written are in high level languages, which is a little closer to English than a sequence of 0's and 1's that is the machine language, so us humans https://www.quora.com/What-is-the-difference-between-runtime-and-compile-time have an easier time understanding and working with the code. To convert this program code into an executable file that can be read and executed by a machine, we use a Compiler.Now when you just use the terms http://pc.net/helpcenter/answers/compile_time_vs_runtime runtime and compile time, the first thing that comes to mind are the compile time errors and runtime errors: Compile time errors: When we feed a bunch of text to the compiler to convert it to machine code.What can time error go wrong at compile time: Syntax errorsTypechecking errors(Rarely) compiler crashesIf the compiler succeeds, what do we know? The program was well formed---a meaningful program in whatever language.It's possible to start running the program as it's in a machine readable form. (The program might fail immediately, but at least we can try.)What are the inputs and outputs? Input was the program being compiled, plus any header files, interfaces, libraries, or other voodoo that it needed to import in order compile time error to get compiled.Output is hopefully assembly code or relocatable object code or even an executable program. Or if something goes wrong, output is a bunch of error messages.Runtime errors: What can go wrong are run-time errors:Division by zeroDeferencing a null pointerRunning out of memoryAlso there can be errors that are detected by the program itself:Trying to open a file that isn't thereTrying find a web page and discovering that an alleged URL is not well formedIf run-time succeeds, the program finishes (or keeps going) without crashing.Another scenario where the two terms can be used is in reference to when exactly is the source code compiled or converted to machine code: once just after the code is written i.e. compiled programs, or every time just before the program needs to run, i.e. interpreted programs, or compiled at runtime: In a compiled program (examples are C/C++ and Fortran):The source code is fed into another program (usually a compiler), which produces an executable program (or an error).The executable is run (by double clicking it, or typing it's name on the command line)Things that happen in the first step are said to happen at "compile time", things that happen in the second step are said to happen at "run time".In an interpreted program (example MicroSoft basic (on dos) and python):The source code is fed into another program (usually called an interpreter) which "runs" it di
that refer to different stages of software program development. In order to create a program, a developer first writes source code, which defines how the program will function. Small programs may only contain a few hundred lines of source code, while large programs may contain hundreds of thousands of lines of source code. The source code must be compiled into machine code in order to become and executable program. This compilation process is referred to as compile time. A compiled program can be opened and run by a user. When an application is running, it is called runtime. The terms "runtime" and "compile time" are often used by programmers to refer to different types of errors. A compile time error is a problem such as a syntax error or missing file reference that prevents the program from successfully compiling. The compiler produces compile time errors and usually indicates what line of the source code is causing the problem. If a program's source code has already been compiled into an executable program, it may still have bugs that occur while the program is running. Examples include features that don't work, unexpected program behavior, or program crashes. These types of problems are called runtime errors since they occur at runtime. Entered: July 6, 2011 – by Per Christensson Category: Software Next Software Question: How do I share a printer with multiple computers? All Software Questions Help Center Home Print Copyright © 2016 PC.net