Question

What function do you use to set a block of memory to a specific character in repeat?

a) memset()
b) memcpy()
c) memmove()
d) memchr()

Answer 1

The function used to set a block of memory to a specific character is memset(). It is used to initialize memory with a constant byte, unlike memcpy(), memmove(), and memchr(), which serve different purposes.

Step-by-step explanation:

The function you use to set a block of memory to a specific character in repeat is memset(). This function fills the first n bytes of the memory area pointed to by ptr with the constant byte c. It is used to initialize a block of memory to a particular value. For instance, to set an array of 10 integers to zero, you would use memset(array, 0, sizeof(int) * 10).

Other functions mentioned, such as memcpy() and memmove(), are used for copying blocks of memory, with memmove() being safe to use when the source and destination overlap. Memchr(), on the other hand, is used to search for a character in a block of memory.