Author: admin
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Hello World
Every learner aspiring to become a professional software developer starts with writing a Hello World program in the programming language he/she is learning. In this chapter, we shall learn how to write a Hello World program in C language. Hello World in C Language Before writing the Hello World program, make sure that you have…
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Program Structure
A typical program in C language has certain mandatory sections and a few optional sections, depending on the program’s logic, complexity, and readability. Normally a C program starts with one or more preprocessor directives (#include statements) and must have a main() function that serves as the entry point of the program. In addition, there may be global declarations of variables and functions, macros, other…
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Environment Setup
To start learning programming in C, the first step is to setup an environment that allows you to enter and edit the program in C, and a compiler that builds an executable that can run on your operating system. You need two software tools available on your computer, (a) The C Compiler and (b) Text Editor.…
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History of C Language
C programming is a general-purpose, procedure-oriented programming language. It is both machine-independent and structured. C is a high-level programming language developed by Dennis Ritchie in the early 1970s. It is now one of the most popular and influential programming languages worldwide. C is popular for its simplicity, efficiency, and versatility. It has powerful features including low-level memory access,…
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Features of C Programming Language
Dennis Ritchie and Ken Thompson developed the C programming language in 1972, primarily to re-implement the Unix kernel. Because of its features such as low-level memory access, portability and cross-platform nature etc., C is still extremely popular. Most of the features of C have found their way in many other programming languages. The development of…
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Overview
C is a general−purpose, high−level language that was originally developed by Dennis M. Ritchie to develop the UNIX operating system at Bell Labs. C was originally first implemented on the DEC PDP-11 computer in 1972. In 1978, Brian Kernighan and Dennis Ritchie produced the first publicly available description of C, now known as the K&R…
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Python String Formatting
String format() The format() method allows you to format selected parts of a string. Sometimes there are parts of a text that you do not control, maybe they come from a database, or user input? To control such values, add placeholders (curly brackets {}) in the text, and run the values through the format() method: ExampleGet your own Python Server…
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Python User Input
User Input Python allows for user input. That means we are able to ask the user for input. The method is a bit different in Python 3.6 than Python 2.7. Python 3.6 uses the input() method. Python 2.7 uses the raw_input() method. The following example asks for the username, and when you entered the username, it gets printed on…
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Python PIP
What is PIP? PIP is a package manager for Python packages, or modules if you like. Note: If you have Python version 3.4 or later, PIP is included by default. What is a Package? A package contains all the files you need for a module. Modules are Python code libraries you can include in your project.…
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Python RegEx
RegEx Module Python has a built-in package called re, which can be used to work with Regular Expressions. Import the re module: import re RegEx in Python When you have imported the re module, you can start using regular expressions: ExampleGet your own Python Server Search the string to see if it starts with “The” and ends with “Spain”: import re txt…