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arrays in c arrays c arrays pointer in c pointer pointer concept in c function operating system semaphore c pointer deadlock memory management strategies system programs virtual memory paging structure process synchronization operating system virtual machine structure in c c structure array of structure passing function to structure accessing structure poin pointer to array pointer to structure in c pointer to array in c arithmetic pointer pointer arithmetic opearting system services operating system deign and implementation operating system design operating system implemetation operating system structure structure of operating system declaration of arrays localisation of arrays c rrays declaration and initialization of arrays array character array strings strings in c accessing array element how to access array two dimensional arrays 2d arrays multidimensional arrays c function categories of function function categories recursion recursive function function recursion scope variable scope scope of variables local and global variables pointer to pointer double pointer multiple pointer tree structured acyclic graph structure disk structure and disk scheduling algorithms scheduling algorithms disk structure file management: file concept file operations file concept file attributes access methods file management file system structure free space management: bitmap linked list grouping counting io hardware io hardware: device controllers interrupts direct memory access device drivers memory management logical vs physical address space address binding fragmentation compaction basic concept deadlock characterization services and system calls classical problems of process synchronization classical problems solution to critical section problem monitor monitors solution to critical section problem semaphore solution to critical section problem methods for hand ling deadlock methods for hand ling deadlock: prevention prevention avoidance and detection bankers algorithm fcfs lru optimal page replacement algorithms page replacement io software device independent io software directory implementation allocation methods contiguous linked indexed fat directory implementation and allocation methods directory structure :single level two level resource allocation graph