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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
Hashed strings can often be deciphered by 'brute forcing'. Bad news, eh? Yes, and particularly if your encrypted passwords/usernames are floating around in an unprotected file some
What are the risks by customer's perspective in Electronic Payment Systems? Risks within Electronic Payment Systems: Through the customer's perspective are as follows:
Design issues: To complete the maximum processor utilization in a multithreaded architecture, the following design issues have to be addressed: Context Switching time: S
Difference between relocatable and self relocatable programs. A relocatable program is one which can be processed to relocate it to a selected area of memory. For illustratio
Array Processing We have seen that for performing vector operations, the pipelining concept has been taken. There is another method for vector operations. If we have an array o
C provides a wide range of variable types. Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
What is a Daemon? A daemon is a method that detaches itself from the terminal and runs, disconnected, in the background, waiting for requests and responding to them. It can als
BIOS or Basic Input/Output System is the first program accessed by the processor during start up to make sure that all the other basic programs, hard drives, ports, peripherals and
What is PCI bus? The Peripheral component interconnect(PCI) bus is a standard that handles the functions found on a processor bus but in a standardized format that is independe
What is the function of the correction system? The correction system handles changes to internal system components. Like as objects of the ABAP/4 Dictionary.
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