Which of the following statements about calloc is true?calloc allocates memory but does not initialize it.calloc allocates memory and initializes it to zero.calloc is the same as malloc.calloc can only be used for arrays.
Question
Which of the following statements about calloc is true?calloc allocates memory but does not initialize it.calloc allocates memory and initializes it to zero.calloc is the same as malloc.calloc can only be used for arrays.
Solution
The correct statement about calloc is: "calloc allocates memory and initializes it to zero."
Here's why:
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calloc stands for 'contiguous allocation'. This function is used in C programming to allocate memory dynamically to derived data types such as arrays, structures, and unions.
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Unlike malloc, which also allocates memory dynamically but leaves it uninitialized, calloc initializes the allocated memory to zero. This is a key difference between calloc and malloc, so the statement "calloc is the same as malloc" is false.
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The statement "calloc allocates memory but does not initialize it" is also false for the same reason.
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While calloc is often used for arrays because it initializes all elements to zero, it's not limited to arrays. So, the statement "calloc can only be used for arrays" is false.
Therefore, the only true statement is "calloc allocates memory and initializes it to zero."
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