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WHAT IS THE DIFFERENCE BETWEEN malloc() and calloc() in c
file management?
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Answer / chris_sreekanth
malloc() allocates 1 unit(datatype) of memory each time it
is called so to allocate memory for a file read char by
char allocating memory each time for a char till EOF.
calloc allocates sizeof(datatype) bytes to the no of
elements in the file, where by the user can specify the
file size as the second arguement.
char *malloc(sizeof(datatype) )
char *calloc(sizeof(datatype), num of elements)
calloc() is more efficient as memory is allocated in 1
cycle so fewer clock cycles, more faster executiop.
| Is This Answer Correct ? | 268 Yes | 63 No |
Answer / ananth kumar
malloc
Holds 1 argument data type
allocates memory byte equivalent to data type
not init alloted memory
Calloc
Holds 2 arguments, data type and number of datas (n)
allocates memory block equivalent to n * data type
clears alloted memory with 0
| Is This Answer Correct ? | 173 Yes | 39 No |
Answer / prakashdasari
malloc () for allocating the single block of memory
calloc () for allocating multiple blocks of memory
the values assigned are garbage in case of malloc() and
proper values (zeros) are assigned in case of calloc().
| Is This Answer Correct ? | 114 Yes | 34 No |
Answer / abhishek pathak mnnit
1- malloc() takes one argument while calloc takes 2 argument.
2- default value of malloc is garvage while calloc is 0;
3- malloc allocate memory in contiguous form while calloc
allocate memory in contiguous form if not avilable the takes
diffrent place.
| Is This Answer Correct ? | 88 Yes | 18 No |
Answer / arshad
1.
calloc function takes two argument while malloc takes only 1
2.
by default memory allocated by malloc contains garbage values
whereas that allocated by calloc contains all zero.
| Is This Answer Correct ? | 49 Yes | 15 No |
Answer / vini sharma
malloc()
allocates byte of memory and calloc() allocates block of
memory.
| Is This Answer Correct ? | 50 Yes | 22 No |
Answer / madan gopal singh
malloc() is a one argument function while calloc() is two
argument function
malloc() take garbage value at initial time while calloc()
take null values at initial time
| Is This Answer Correct ? | 27 Yes | 13 No |
Answer / smitha
Malloc:
1. Takes only 1 argument- the size of the memory block to
be allocated.
2. Allocates memory as a single contiguous block.
3. Will fail if a single contiguous memory block of
required size is not available.
Calloc:
1. Takes two arguments - the number of memory blocks needed
and the size of each memory block.
2. It may or may not allocate a single contiguous block,
thus will not fail if a single contiguous memory block
of required size is not available.
3. Initialises the memory blocks to 0.
| Is This Answer Correct ? | 17 Yes | 3 No |
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