TOC

• 1. expr failing to perform simple multiplication
• 2. Investigating expr
• 3. Looking at the libraries used by expr

TOC

• 1. A random promotion
• 2. Expected unqualified-id before string constant Error
  • 2.1. Verifying the Error is not Environment Related
• 3. The Dangers of MACROS

I was randomly browsing r/CarletonU community on Reddit since it’s one of the schools I may attend next Fall. A particular post interested me due to the title: For anyone in Computer Science. As a recent graduate in Computer Science (undergrad), this post caught my attention. This blog post is inspired by my response on reddit about double pointers.

It came to my attention from an embedded course on udemy the existence of scanset in scanf

Recently, I’ve been learning embedded programming from udemy and there was a section dedicated const. The section was interesting because despite programming in C a lot during my duration of my undergrad, I have never taken a look at const in much detail. I am sure there is more to const than what the course provides but I still learned a lot from this section itself.

Today I learned something new that should have been obvious but it was something I never took time to think about. In Linux, we have three standard streams: stdin, stdout, and stderr. If you are familiar with programming in C, you should know that stdin is the input channel that handles data from an input device such as your keyboard. scanf is a function that scans input according to format (definition from SCANF(3) - Linux Programmer's Manual). But how does scanf actually scan the input?