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C++ Language > Learn C++ Language > What is different between malloc and calloc?
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What is different between malloc and calloc?

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MS SQL SERVER DBA Trainer

The Diffrences are like-- malloc() takes a single argument (memory required in bytes), while calloc() needs two arguments. Secondly, malloc() does not initialize the memory allocated, while calloc() initializes the allocated memory to ZERO. calloc() allocates a memory area, the length will be the product...
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The Diffrences are like-- malloc() takes a single argument (memory required in bytes), while calloc() needs two arguments. Secondly, malloc() does not initialize the memory allocated, while calloc() initializes the allocated memory to ZERO. calloc() allocates a memory area, the length will be the product of its parameters. read less
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Python Trainer

malloc() doesn’t initialize the allocated memory. calloc() allocates the memory and also initializes the allocates memory to zero.
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Tutor

first of all Both functions are used to allocate memory dynamically and they return the address of the first byte DIFFERENCES 1. first difference is between the syntax of malloc and calloc function malloc takes one argument malloc(n*sizeof(data type) where as calloc takes two argument calloc(n,sizeof(data...
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first of all Both functions are used to allocate memory dynamically and they return the address of the first byte DIFFERENCES 1. first difference is between the syntax of malloc and calloc function malloc takes one argument malloc(n*sizeof(data type) where as calloc takes two argument calloc(n,sizeof(data type) 2. malloc does not initializes allocated memory i.e allocated memory contains garbage value where as calloc initializes allocated memory location by zero read less
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calloc - allocates a region of memory large enough to hold "n elements" of "size" bytes each. Also initializes contents of memory to zeroes. malloc - allocates "size" bytes of memory. and never initialise memory. so there may be garbage collection there in memory
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Trainer

Malloc is Used to allocate a contiguous block of memory in bytes. whereas Calloc is used to allocate multiple blocks of contiguous memory in bytes. All the blocks are of same size.
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Malloc allocates single memory piece but calloc allocates memory piece with specified denomination
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B.E (Computer Science & Engineering) 78%; MS (Computer Science) (USA) (GPA: 3.8/4.0)

Malloc allocates memory as a single block. It takes only one argument, which is the size of the block to be allocated in terms of bytes. Also it does not initialize the memory. On the other hand, calloc allocates memory in terms of multiple blocks and takes two arguments, the number of blocks to be...
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Malloc allocates memory as a single block. It takes only one argument, which is the size of the block to be allocated in terms of bytes. Also it does not initialize the memory. On the other hand, calloc allocates memory in terms of multiple blocks and takes two arguments, the number of blocks to be allocated and the size of each block in bytes. It initializes the memory contents to 0. read less
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Computer Science Tutor

Both malloc() and calloc() are used in Dynamic memory allocation but the difference between them is - malloc() does not initialize the memory allocated but calloc() initializes the allocated memory to zero.
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Computer wizard

1. malloc(...) allocates memory blocks and returns a void pointer to the allocated space, or NULL if there is insufficient memory available. calloc(...) allocates an array in memory with elements initialized to 0 and returns a pointer to the allocated space. calloc(...) calls malloc(...) in order...
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1. malloc(...) allocates memory blocks and returns a void pointer to the allocated space, or NULL if there is insufficient memory available. calloc(...) allocates an array in memory with elements initialized to 0 and returns a pointer to the allocated space. calloc(...) calls malloc(...) in order to use the C++ _set_new_mode function to set the new handler mode. 2.calloc(...) allocates a block of memory for an array of elements of a certain size. By default the block is initialized to 0. The total number of memory allocated will be (number_of_elements * size). malloc(...) takes in only a single argument which is the memory required in bytes. malloc(...) allocated bytes of memory and not blocks of memory like calloc(...). read less
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Technology Trainer(C, C++, Java , DS , DBMS etc)

In calloc allocated memory region is initialized with zero whereas in malloc with garbage values
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