C PROGRAMMING CERTIFICATION -- MODULE 5: STRUCTURES & FILE HANDLING
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(Placeholder lecture notes.)

1. struct definitions, nested structs, arrays of structs
2. typedef for readability
3. File I/O: fopen modes (r, w, a, rb, wb, ab), fclose
4. Reading/writing text with fgets/fprintf, binary with fread/fwrite
5. Error handling: checking fopen return value, ferror/feof

Practice problems for this module are listed on the module page.