C++ strncmp() Function Example | C++ Standard Library

C++ strncmp() Function Example | C++ Standard Library

C++ strncmp() function is a predefined library which is used for comparing two strings of which the characters are terminated by null characters.

C++ strncmp() is an inbuilt function that is used for string handling. It is defined in string.h header file. The strncmp() function is a predefined library which is used for comparing two strings of which the characters are terminated by null characters. The comparison is done lexicographically and returns an integer.

C++ strncmp() Function

The std::strncmp() function lexicographically compares not more than count characters from a two null-terminated strings and returns the integer based on the outcome.

  1. The strncmp() function takes two strings and a number num as arguments and compares at most first num bytes of both the strings.
  2. The** num** should be at most equal to a length of the longest string. If the num is defined greater than a string length than comparison is done till the null-character(‘\0’) of either string.
  3. The strncmp() function compares the two strings lexicographically. It starts the comparison from a first character of each string. If they are equal to each other, it continues and compares the next character of each string and so on.
  4. This process of comparison stops until the terminating null-character of either string is reached or num characters of both the strings matches.

c++ c++ strncmp()

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