Difference Between Calloc() and Malloc()
The malloc() function and calloc() function differ according to the use of the function while assigning the memory while run time. The major differences between the two are explained in the table provided below:
Key Differences between Calloc() and Malloc()
|This function only carries unuseful/garbage values||Carries important values.|
|Faster allocation time than calloc()||Slower allocation time wrt malloc().|
|Do not initialize the memory.||Initializes the memory.|
|Less secure than calloc()||Secure than malloc()|
|More time-efficient.||Less time efficient.|
|Returns the starting address.||It makes the return along with making it zero.|
|Creates and assign only a single block of memory||Can create or assign multiple memory blocks.|
What is Malloc()?
The malloc stands for memory allocation. Malloc() is a type of library routine. There are four types of library routines. It is used to save the block of memory. The saving of the memory in malloc() occurs dynamically. The malloc will reserve the memory space in it as well.
The syntax of malloc() is: ptr = (cast_type *) malloc (byte_size);
The malloc function can be assigned to any pointer. The main function of the malloc() is that it returns the null pointer which will point to the memory location. It will be a type of void. Knowing about malloc() will be helpful in understanding the difference between malloc() and calloc(). Check here the difference between function and procedure in order to understand the functions properly.
What is Calloc()?
The calloc() is another type of library routine. It stands for contiguous allocation. It is also used for memory allocation. The calloc is used where the memory allocation is required in complex data structures. Calloc() returns the null pointer on failing to allocate the specific space.
The syntax of calloc() is: ptr = (cast_type *) calloc (n, size);
Check out some important related topics: