What is memcmp?
The memcmp() function compares n bytes of two regions of memory, treating each byte as an unsigned character. It returns an integer less than, equal to, or greater than zero according to whether s1 is lexicographically less than, equal to, or greater than s2.
How does memcmp work in C?
In the C Programming Language, the memcmp function returns a negative, zero, or positive integer depending on whether the first n characters of the object pointed to by s1 are less than, equal to, or greater than the first n characters of the object pointed to by s2.
What is the return value of memcmp?
zero
The memcmp() function returns zero if the two strings are identical, oth- erwise returns the difference between the first two differing bytes (treated as unsigned char values, so that `\200′ is greater than `\0′, for example).
What is the difference between memcmp and strcmp?
In short: strcmp compares null-terminated C strings. strncmp compares at most N characters of null-terminated C strings. memcmp compares binary byte buffers of N bytes.
Is strcmp fast?
While comparing the two function, in a loop repeted 500’000’000 times, strcmp execute too much fast, about x750 times faster. The execution time of that function is 3.058s , while strcmp only 0.004s .
What is the difference between Memcmp and strcmp?