ClassDiagramComplex.png' alt='Simple Array Programs In C' title='Simple Array Programs In C' />LINQEver since I learned about LINQ, I keep discovering new ways to use it to improve my code. Every trick makes my code a little bit faster to write, and a little bit easier to read. This posting summarizes some of the tricks that I came across. I will show you how to use LINQ to If you have your own bag of LINQ tricks, please share them in the comments Also, if you like this article, you may like my next article, Extended LINQ additional operators for LINQ to objects. Initialize an array. Often, you need to initialize elements of an array to either the same value, or to an increasing sequence values, or possibly to a sequence increasing or decreasing by a step different from one. With LINQ, you can do all of this within the array initializer no for loops necessary In the following code sample, the first line initializes a to an array of length 1. Enumerable. Repeat 1, 1. To. Array. int b Enumerable. Range0, 1. 0. To. Simple Array Programs In C++' title='Simple Array Programs In C++' />Array. Enumerable. Range0, 1. Selecti 1. To. Array A word of caution if you are initializing large arrays, you may want to forego the elegance and use the old fashioned for loop instead. The LINQ solution will grow the array dynamically, so garbage arrays will need to be collected by the runtime. That said, I use this trick all the time when initializing small arrays, or in testingdebugging code. Iterate over multiple arrays in a single loop. I know that instantiated arrays of value types in C are automatically populated with the default value of the type e. Is there a. A New Kind of Science is a bestselling, controversial book by Stephen Wolfram, published by his own company in 2002. It contains an empirical and systematic study of. C program to sort array in ascending order by using bubble sort technique. The code of the C program to sort array in ascending order, C program. CPCC Program Areas Accounting. The Accounting curriculum is designed to provide students with the knowledge and skills necessary for employment and growth in the. Sanfoundry Global Education Learning Series 1000 C Programs. Heres the list of Best Reference Books in C Programming, DataStructures and Algorithms. A friend asked me a C question is there a way to iterate over multiple collections with the same loop His code looked something like this foreach var x in array. Do. Somethingx. Do. Somethingx. In his case, the loop body was larger, and he did not like the duplicated code. But, he also did not want to allocate a new array to hold elements from both array. LINQ provides an elegant solution to this problem the Concat operator. Im all new to Android and Im trying to create a spinner programmatically and feeding it with data from an array, but Eclipse gives me a warning that I cant handle. C programming examples These programs illustrate various programming elements, concepts such as using operators, loops, functions, single and double dimensional. You can rewrite the above two loops with a single loop as follows foreach var x in array. Concatarray. 2. Do. Somethingx. Note that since LINQ operates at the enumerator level, it will not allocate a new array to hold elements of array. So, on top of being rather elegant, this solution is also space efficient. Generate a random sequence. This is a simple trick to generate a random sequence of length N Random rand new Random. Seq Enumerable. Repeat0, N. Selecti rand. Next Thanks to the lazy nature of LINQ, the sequence is not pre computed and stored in an array, but instead random numbers are generated on demand, as you iterate over random. Seq. 4. Generate a string. LINQ is also a nice tool to generate various kinds of strings. I found this quite useful to generate strings for testing and debugging purposes. Lets say that you want to generate a string with the repeating pattern ABCABCABC of length N. Using LINQ, the solution is quite elegant string str new string. Enumerable. Range0, N. Selecti charA i 3. To. Array EDIT Petar Petrov suggested another interesting way to generate strings with LINQ. His approach applies to different scenarios than my solution above string values string. Joinstring. Empty, Enumerable. Repeatpattern, N. To. Array 5. Convert sequences or collections. One thing you cannot do in C or VB is to cast a sequence of type T to a sequence of type U, even if T us a derived class from U. So, you cannot just simply cast Listlt string to Listlt object. For an explanation why, see Bick Byers posting. But, if you are trying to convert IEnumerablelt T to IEnumerablelt U, LINQ has a simple and efficient solution for you IEnumerablelt string str. Enumerable IEnumerablelt object obj. Enumerable str. Enumerable. Castlt object If you need to convert Listlt T to Listlt U, there is also a simple LINQ solution, but it involves copying the list Listlt string str. List Listlt object obj. List new Listlt object str. List. Castlt object EDITChris Cavanagh suggested an alternate solution var obj. List str. List. Castlt object. To. List 6. Convert a value to a sequence of length 1. When you need to convert a single value to a sequence of length 1, what do you do You could construct an array of length 1, but I prefer the LINQ Repeat operator IEnumerablelt int seq Enumerable. Repeatmy. Value, 1 7. Iterate over all subsets of a sequence. Sometimes it is useful to iterate over all subsets of an array. This situation arises quite frequently in brute force solutions to hard problems. For small inputs, subset sum, boolean satisfiability and the knapsack problem can all be solved easily by iterating over all subsets of some sequence. In LINQ, we can generate all subsets of array arr as follows T arr Enumerable. Range0, 1 lt lt arr. Length. select. from i in Enumerable. Range0, arr. Length. Note that if the number of subsets overflows an int, the above code will not work. So, only use it if you know that the length of arr is at most 3. If the length of arr is greater than 3. Comments and Conclusion. I hope you find these tricks useful and applicable to your programs. The code samples in this posting are all implemented in C, but they can be easily adapted to just about any other. Net language. However, LINQ is most conveniently used from. Net languages that support extension methods, lambda expressions and type inference, such as C and Visual Basic. To the best of my knowledge, each code sample in this posting works, but as is common on the web I dont make any guarantees. As always, double check any code before using it. Related Tags LINQ. C programming examples Programming Simplified. C programming examples These programs illustrate various programming elements, concepts such as using operators, loops, functions, single and double dimensional arrays, performing operations on strings, files, pointers etc. Browse the code from simple C programs to complicated ones you are looking for, every one of them is provided with the output. C program downloads with executable files so that you save on your computer and run programs without compiling the source code. All programs are made using C programming language and Codeblocks, most of these will work under Dev C compiler also. Download software you need to develop codes. The first program prints Hello World on your output device. C programming examples with output. Example 1 C hello world programMy first C program include lt stdio. Hello Worldn return. Output of above program Hello WorldExample 2 C program to take input from user using scanfinclude lt stdio. Enter an integern scanfd, number. Integer entered by you is dn, number. Output Enter a number. Number entered by you is 5. Example 3 using if else control instructionsinclude lt stdio. For comparison use as is the assignment operator. Output x is equal to one. Example 4 loop exampleinclude lt stdio. Value is dn, value. Output Value is 1. Value is 2. Value is 3. Example 5 C program for prime numberinclude lt stdio. Enter a numbern scanfd, n. Prime number. n elsefor c 2 c lt n 1 cif n c 0break if c n printfNot prime. Prime number. n return. Example 6 command line argumentsinclude lt stdio. Number of command line arguments passed dn, argc. Command line argument passed is sn, c1, argvc. Above C program prints the number and all arguments which are passed to it. Example 7 Array programinclude lt stdio. Enter the number of elements in arrayn scanfd, n. Enter d elementsn, n. Array elements entered by you are n. Example 8 function programinclude lt stdio. Main function. n. Back in function main. Welcome to my function. 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