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Command line arguments in C / C++

In this article, we’ll be looking at how we can use command line arguments in C / C++.Command Line arguments are very useful if you want to pass any input strings to your main program, from the command line.These arguments are passed as parameters to the main() function.Let’s look at how we can use these effectively.Table of Contents1 Why should we use command line arguments?2 Command Line Arguments in C/C++ – The...

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A Complete Guide to fread() in C/C++

In this article, we’ll take a look at using fread() in C/C++.The fread() function is very useful if you want to store the contents of reading a file into a buffer. Let’s take a look at how we can use this function, using some illustrative examples!Table of Contents1 Basic Syntax of fread() in C/C++2 Using fread() in C/C++ – Some simple examples3 Conclusion4 ReferencesBasic Syntax of fread() in C/C++This function will...

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How to Check if a key exists in Python Dictionary

Hey there! Today we are going to cover the various techniques or methods to check if a given key exists in a Python Dictionary or not.Table of Contents1 Introduction2 Ways to check if a key exists2.1 1. Using try-except code Block2.2 2. Using ‘in’ operator2.3 3. Using get() Method2.4 4. Using keys() Method2.5 5. Using has_key() Method3 Summing Up4 ReferencesIntroductionIn many cases, we may need to check the presence of a...