Primary Insider is a collection of articles on different topics and programming languages for student programmer such as C, C++, Java, Tech News and other topics.
1. What is the most challenging task you've ever done? 2. What is your favorite project you've ever done? 3. What are some things you like about the developer tools you use? 4. Who inspires you in your developer community (iOS, Android, Frontend ect.)? 5. Do
1. How to use simple TextView in android Write this code in .xml file <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width=
1. Set nth bit of integer x x | (1<<n) Example #include<stdio.h> int main() { int x = 10; //1010 int n = 2; int result = x | (1<<n); //1110 printf("%d\n", result); //14 return 0; } 2. Unset nth bit of integer
The following are the steps to execute a program with Command Line Argument inside Turbo C/C++ Compiler : 1. Open Turbo C++ Open Turbo C++. If you don't have, you can download Turbo C++ from here. 2. Write a program Following is a simple example which checks if
Dangling pointers in computer programming are pointers that pointing to a memory location that has been deleted (or freed). Dangling pointers arise during object destruction, when an object that has an incoming reference is deleted or deallocated, without modifying the value of the pointer, so that the pointer still points
Asymptotic notation is a set of languages that allow us to express the performance of our algorithms in relation to their input. Big O notation is used in Computer Science to describe the performance or complexity of an algorithm. Big O specifically describes the worst-case scenario, and can be
One simple answer - read it backwards (as driven by Clockwise/Spiral Rule). * int * ptr - ptr is a pointer to int * int const * ptr - ptr is a pointer to constant int * int * const ptr - ptr is a constant pointer to int * const int * const ptr - ptr is a constant pointer to
Martin Richards, creator of the BCPL language (a precursor of C), designed arrays initiating at 0 as the natural position to start accessing the array contents in the language, since the value of a pointer p used as an address accesses the position p+0 in memory. The name of
The programming ideas/challenges featured here can be programmed in popular programming languages like C, C++, C#, Java, Go, Python, Ruby, JavaScript and PHP for either the Web, MacOS, Windows PC, Android, Windows Phone or iOS. Just fire up your favourite IDE, begin work on any of the program/projects
Memory layout / representation of C program is organized in following fashion - 1. Text or Code segment 2. Initialized data segment 3. Uninitialized data segment 4. Stack 5. Heap 1. Text or Code Segment Text segment contains machine code of the compiled program. Usually, the text segment is shareable so that
In computer programming, digraphs and trigraphs are sequences of two and three characters, respectively, that appear in source code and, according to a programming language specification, should be treated as if they were single characters. Why Digraphs and Trigraphs exist? Various reasons exist for using digraphs and trigraphs: keyboards may
Storage class specifiers are the keywords which can appear next to the top-level type of a declaration. The use of these keywords affects the storage duration and linkage of the declared object, depending on whether it is declared at file scope or at block scope: 1. auto This storage
Storage class specifiers are the keywords which can appear next to the top-level type of a declaration. The use of these keywords affects the storage duration and linkage of the declared object, depending on whether it is declared at file scope or at block scope: Keyword Storage Duration Linkage
An assertion is a statement used to assert that a fact must be true when that line of code is reached. Assertions are useful for ensuring that expected conditions are met. 1. Simple Assertion Simple assertion can be implemented using assert(expression) method of assert.h header file. Syntax assert(
1. Mixing signed and unsigned integers in arithmetic operations It is usually not a good idea to mix signed and unsigned integers in arithmetic operations. For example, what will be output of following example? #include <stdio.h> int main(void) { unsigned int a = 1000; signed int b = -1;