Dynamic Memory Allocation in C Interview Questions & Answers

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C Dynamic Memory Allocation: malloc(), calloc(), free() & realloc() The exact size of array is unknown untill the compile time,i.e., time when a compiler compiles code written in a programming language into a executable form. Dynamic allocation is a pretty unique feature to C (amongst high level languages). It enables us to create data types and structures of any size and length to suit our programs need within the program.