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The various memory allocation functions are described below:
(i) malloc( ): It is a memory allocation function that assigns requested size of bytes and returns a pointer to the first byte of the allocated space. The malloc function returns a pointer of type void so we can allocate it to any type of pointer.
(ii) calloc( ): It is another memory allocation function that assigns space for an array of elements, initializes them to zero and then returns a pointer to the memory. This function is normally used for request memory space at run time. Whereas malloc allocates a single block of storage space, calloc allocates multiple block of storage, each of the similar size, and then sets all bytes to zero
(iii) realloc( ): realloc is a memory allocation function that changes the size of previously allocated space. Sometime it may happen that the allocated memory space is larger than what is needed or it is less than what is needed. In both cases, we can change the memory size already allocated with the help of the realloc function called as reallocation of memory
Write short notes on Event Model.
What is EDO RAM A minor modification to the structure of the DRAM changes the device into an EDO (extended data output) DRAM device. In EDO memory, any memory access, including
The history file, history.txt, is the branch history of a run of the gcc compiler (the first field is the address of the branch instruction, the second field is the target branch a
Q. How to Information transfer from one register to another? Information transfer from one register to another is designated in symbolic notation by a replacement operator. For
What is a digital multiplexer? Ans: Multiplexer: Data selector or MUX is a logic circuit selects binary information from one of several input and directs this to a sing
Computer have many type of memory like primary memory , Auxiliary memory , Cache memory , buffer memory ,virtual memory , The work of all memory heterogeneously primary memory
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Compare and contrast POP e-mail to Web-based e-mail systems in terms of control, security, and accessibility.
Variable or compound expression - Unification algorithm: Here some things to note regarding this method are: (i) There if really trying to match a constant to a different
Array is a pointer-to-pointer-to-int: at the first level, it points to a block of pointers, one for each row. That first-level pointer is the first one we allocate; it has nrows e
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