# std::char_traits<CharT>::compare

From cppreference.com
< cpp‎ | string‎ | char traits

static int compare( const char_type* s1, const char_type* s2, std::size_t count ); |  | (until C++17)
static constexpr int compare( const char_type* s1, const char_type* s2, std::size_t count ); |  | (since C++17)

Compares the first count characters of the character strings s1 and s2. The comparison is done lexicographically.

If count is zero, strings are considered equal.

### Parameters

s1, s2 | - | pointers to character strings to compare
count | - | the number of characters to compare from each character string

### Return value

Negative value if s1 is less than s2.

​0​ if s1 is equal to s2.

Positive value if s1 is greater than s2.

### Exceptions

Throws nothing.

### Complexity

Linear in count.

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