I want to run multiple lines of code based on the results of an if or ifelse statement. eg. I am wanting to have a multi condition if statement using the || (or) and the && (and) in one statement. Find centralized, trusted content and collaborate around the technologies you use most. This is very unlike any Python style idiom--please don't do this. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Sometimes I break long conditions in ifs onto several lines. For a multi-line macro you need to add a \ character to the end of all but the last line to tell the macro processor to continue parsing the macro on the next line, . Is Benders decomposition and the L-shaped method the same algorithm? Writing conditional statements without using if/else/? What is the purpose of putting the last scene first? Chaining If-Else with multiple do statements in R, execute different functions considering output in r. Does attorney client privilege apply when lawyers are fraudulent about credentials? geeksforgeeks Line continuation are divided into two different ways: Explicit line continuation Implicit line continuation Using "\" (Explicit line continuation): In this type of multi-line statement, we will be using the line continuation character (\) to split a statement into multiple lines. With its default options it gives you GNU indentation, i.e. The C/C++ if statement is the most simple decision making statement. Asking for help, clarification, or responding to other answers. Statements in Visual Basic | Microsoft Learn I mean we should think again about our code if we have to do this kind of coding. When it does, this turns out to be due to bad algorithm choices or IO. Why does Isildur claim to have defeated Sauron when Gil-galad and Elendil did it? One of the questions asked is "what do you prefer for cases like that?" Connect and share knowledge within a single location that is structured and easy to search. PEP-8 actually seems contradictory here. Why is there a current in a changing magnetic field? How to explain that integral calculate areas? In C++, shorthand if else is used to write the multiple lines if-else statement in a C++ single line if statement code. if statement - cppreference.com This at least gives you some differentiation. Conclusions from title-drafting and question-content assistance experiments Code-style for indention of multi-line 'if' statement? Syntax : op1 ? Using multiple conditions in an if statement in C++, Using if statement to satisfy two conditions, Incorrect result of if statement in LaTeX. Does it cost an action? In C can a long printf statement be broken up into multiple lines? It demonstrates a fierce resistance to any legitimacy that China's ongoing South China Sea nine-dash line . Verifying Why Python Rust Module is Running Slow. This also tends to help readability. In what ways was the Windows NT POSIX implementation unsuited to real use? How to reclassify all contiguous pixels of the same class in a raster? You could also do this with a dictionary: This option is more complicated, but you may also find it useful: Dunno if that works for you, but it's another option to consider. When indenting long if conditions, you usually do something like this (actually, PyDev indents like that): However, this puts the block started by the if statement on the same indentation level as the last part of the if condition which makes it very ugly/hard to read in my opinion as you don't immediately see where the block starts. Funny enough, as I was writing this and thinking about the "problem", I came up with yet another idea, which removes the overhead of a function call. Is Benders decomposition and the L-shaped method the same algorithm? @Stoff Thank you for removing my comment. It's not "over-indenting?". Can you imagine a debugger in an IDE that put all variables and values onto a single line? Passing in N-arguments is not correct. The community reviewed whether to reopen this question 8 months ago and left it closed: Original close reason(s) were not resolved. Why gcc is so much worse at std::vector vectorization than clang? If you want to stick with your existing code (as opposed to factor things out into inline functions), and just modify the indentation, I'm a big fan of using indent consistently. So it's not equivalent if some guarding condition are being followed by possibly failing one. +1 for keeping indents where you can keep track of them. Adjective Ending: Why 'faulen' in "Ihr faulen Kinder"? Neither of those two examples have anything at all to do with the C preprocessor. So if you use more than two, it will work as a continuation of the previous line. She told it was possible and then insulted my limited knowledge on the subject. 3. fo\ o ( b\ ar ); In VB statements are delimited by newlines but in C/C++ they are delimited by semicolons so newlines don't matter at all ( unless you are in some preprocessor directive ) Mar 20, 2011 at 3:14am. :). thank you very much! But I think this is the way someone in kernel space can make this. Vietnam's response to Hollywood's depiction of China's nine-dash line is understandable. Making statements based on opinion; back them up with references or personal experience. In addition to this you can declare a function or a lambda to return your true false as opposed to creating an extra variable. You also have braces around the multiple statements. Is it possible to play in D-tuning (guitar) on keyboards? Can I do a Performance during combat? When the user enters 5, the test expression number<0 is evaluated to false and the statement inside the body of if is not executed h : i a ? @Oben: That's a formatting principle for paragraphs, not code. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, How to write an if statement with multiple || and && in C? BTW I guess in those situation we should transmute our dogmatic belief if we have one. Is calculating skewness necessary before using the z-score to find outliers? Do you have an idea or example how to make my code more readable? Connect and share knowledge within a single location that is structured and easy to search. It does not show them being used together. When I ask my college professor about it. Besides that, I wouldn't care about the extra variable issue. What changes in the formal status of Russia's Baltic Fleet once Sweden joins NATO? Conclusions from title-drafting and question-content assistance experiments Can #if pre-processor directives be nested in C++? Conclusions from title-drafting and question-content assistance experiments How to use multiple AND statement to check char, Improve INSERT-per-second performance of SQLite. You can use this to spread preprocessor directives across multiple physical lines. The problem area is the last bit of coding. This also keeps the benefits of short-circuit evaluation of boolean operators, but of course adds the overhead of a function call that basically does nothing. How to break very long code lines in Python? This is an expression, not an expression statement. But, I gave it up because I was ending up with multiple lines in a row of ) and }. The indentation and placing the logical operators at the beginning of the line is a very good way to give overview of the order of the conditions. I read somewhere in either Gries or Djikstra that putting the logic operator at the front of the line -- making more visible -- helped. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Old novel featuring travel between planets via tubes that were located at the poles in pools of mercury. The question is also about code style and legibility of code which the OP is clearly concerned about. A player falls asleep during the game and his friend wakes him -- illegal? Can I do a Performance during combat? Not the answer you're looking for? Is a thumbs-up emoji considered as legally binding agreement in the United States? Does attorney client privilege apply when lawyers are fraudulent about credentials? IMPO Parentheses signify a tuple or a function call. Is it okay to change the key signature in the middle of a bar? Just a few other random ideas for completeness's sake. // forea. (It's usually not hard, but it can be difficult or much less obvious/readable to preserve the short-circuiting of "and"/"or" when rewriting.). Find centralized, trusted content and collaborate around the technologies you use most. Link. how do I continue a long if statement over multiple lines? #966 - GitHub How are the dry lake runways at Edwards AFB marked, and how are they maintained? Example: I kind of like this because when you look at it, a bell immediatelly rings in your head saying "hey, there's a complex thing going on here!". This combines nicely with generator comprehensions, for example: (I've lightly modified the identifiers as fixed-width names aren't representative of real code at least not real code that I encounter and will belie an example's readability. this is indeed a very neat way of doing multi-conditionals :) don't know why it does not have more votes :), are there any caveats? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Multi-statement Macros in C++ - Stack Overflow If you can't compute the range directly from the count as shown in Scott Hunter's answer (e.g., if the ranges aren't uniformly sized or the values they map to don't form a simple pattern), you can encapsulate a little table lookup like this: Imo, that makes it less readable. However, if only one line belongs to an If, the braces are optional. This PEP takes no explicit position on how (or whether) to further visually distinguish such conditional lines from the nested suite inside the if -statement. Why should we take a backup of Office 365? For example: if a == 1 && b == 1 ||. This looks pretty inconsistent as the second line is indented much more than the first line but it's readable. If im applying for an australian ETA, but ive been convicted as a minor once or twice and it got expunged, do i put yes ive been convicted? Thanks for contributing an answer to Stack Overflow! What is the difference between #include