C file operations

C series for 1st sem students: File System Manipulation

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Today we are going to discuss FILE SYSTEM operations using the C language. Till now we have worked with the RAM for storing our variables and our data. But the RAM is not persistent. We need to store data permanently. So we store them in permanent memory like hard disks or CDs/DVDs, in files. Different types of data are stored in different type of files, but for our purposes we’ll work with text files in windows system which have an extension of ‘.txt‘.

union enum

C series for 1st sem students: Lesser taught constructs, Unions & Enums

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Today we’re going to discuss two topics which are rarely taught in a C programming college course, Unions & Enums. One may justify that by saying they are not absolutely necessary for basic knowledge in programming, or that these topics are rarely asked in interviews. But if you become a professional C developer, you’ll have extensive use of them. These are particularly useful in low level programming, like with embedded systems and robotics.