applying the knowledge
how can i learn to apply the knowledge i'm learning into creating new codes?
Pick a project that seems doable and try to finish it! It's the best way to improve. Alternatively you can check out sites like Project Euler (https://projecteuler.net/) which has some mathsy challenges or codewards.com, which has programming challenges of all kinds.
Why won't my image display
I have made a calculator in which my % (Percentage) not work correctly for 100%50 or 100%20.
Number of Ones ( C++ ) question!
Python palindrome challenge.