C in 100 Seconds: Error Handling — errno, perror, strerror | Episode 39

C has no exceptions — errors are handled through return codes, errno, and helper functions. Learn perror for quick error messages, errno and strerror for details, and fprintf stderr for custom errors. Student code: https://github.com/GoCelesteAI/c-in-100-seconds/tree/main/episode39 #c #programming #100seconds #learnc #errorhandling #errno #perror #strerror #tutorial