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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
How would you kill a process? The "kill" command takes the PID as one argument; this signifies which process to terminate. The PID of a process can be got using "ps" command
How different control function categories help in signalling and control. Events happening outside the exchange on the line units, trunk junctions and inter exchange signalin
Data can be moved from one field to another using a 'Write:' Statement and stored in the desired format. Write: Date_1 to Date_2 format DD/MM/YY.
Quantifiers and Variables - propositional model: There is one question is arrives that 'What do sentences containing variables mean?' In other way of words, how does a first-o
Name some register output control signals. Pc out , MDR out , Z out , Offset out , R1 out , R2 out , R3 out and TEMP out .
Odd-Even Merging Circuit Let's firstly understand the idea of merging two sorted sequences using an odd-even merging circuit. The functioning of a merging circuit is as given b
Problem (a) Using a labelled diagram of an Instruction-Execution cycle, describe how a CPU executes single machine instructions by referring to the five main operations.
For what is defparam used? Though, during compilation of Verilog modules, parameter values can be altered separately for every module instance. This allows us to pa
If you are using C language to implement the heterogeneous linked list, what pointer type will you use? The heterogeneous linked list having different data types in its nodes a
Q. What is Enhanced IDE? The principle behind EIDE interface is the same as in IDE interface however this drive has capacities varying from 10.2GB to 20.5GB. The rotation speed
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