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Showing content from https://www.tutorialspoint.com/cpp_standard_library/cpp_string_length.htm below:

C++ String Library - length

It returns the length of the string, in terms of bytes.

Following is the declaration for std::string::length.

size_t length() const;

size_t length() const noexcept;

none

It returns the length of the string, in terms of bytes.

Never throw any exceptions.

In below example for std::string::length.

#include <iostream>
#include <string>

int main () {
   std::string str ("Sairamkrishna Mammahe");
   std::cout << "The size of str is " << str.length() << " bytes.\n";
   return 0;
}

The sample output should be like this −

The size of str is 21 bytes.

string.htm

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