Which one of the following statements allocates enough space to hold an array of 10 integers that are initialized to 0 ?

A) int *ptr = (int *) calloc(10,sizeof(int));
b) int *ptr = (int *) alloc( 10*sizeof(int));
c) int *ptr = (int *) malloc( 10*sizeof(int));
d) int *ptr = (int *)calloc(10*sizeof(int));

Answered by Ragini rani on 2005-05-13 09:01:56: a is the correct ans Calloc allocates space and initialized them to 0
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Showing Answers 1 - 9 of 9 Answers


  • Mar 23rd, 2005

C is the correct answer. Malloc allocates enough space for 10 integers

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Ragini rani

  • May 13th, 2005

a is the correct ans Calloc allocates space and initialized them to 0

vipin dhaiya

  • Jul 27th, 2005

ans a is correct because calloc function ll initialize the array to zero

sandeep paliwal

  • Aug 23rd, 2005

(a) is the correct answer because calloc initialize the array to zero.....and since 2 arguments are needed for calling calloc function option (d) is incorrect

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yash grotra

  • Jul 24th, 2006

a is the correct answer because calloc initilize the array to zero.

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Santh kumar

  • Oct 3rd, 2006

 Hi all, i'd like clear difference b/w those  2 functions.

There are 2 differences.

First, is in the number of arguments. malloc() takes a single argument(memory required in bytes), while calloc() needs 2 arguments(number of variables to allocate memory, size in bytes of a single variable).

Secondly, malloc() doesnot initialize the memory allocated, while calloc() initializes the allocated memory to ZERO.

The difference b/w malloc and calloc are: 1. malloc() allocates byte of memory where as calloc()allocates block of memory.

malloc(s); returns a pointer for enough storage for an object of s bytes. calloc(n,s); returns a pointer for enough contiguous storage for n objects,each of s bytes. The storage is all initialised to zeros.

Purvi mehta

  • Nov 8th, 2006

Ans:- C

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