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

C++ String empty() Function

It returns whether the string is empty (i.e. whether its length is 0).

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

bool empty() const;

bool empty() const noexcept;

none

it returns true if the string length is 0, false otherwise.

if an exception is thrown, there are no changes in the string.

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

#include <iostream>
#include <string>

int main () {
   std::string content;
   std::string line;
   std::cout << "Please introduce a text. Enter an empty line to finish:\n";
   do {
      getline(std::cin,line);
      content += line + '\n';
   } while (!line.empty());
   std::cout << "The text you introduced above was:\n" << content;
   return 0;
}

The sample output should be like this −

Please introduce a text. Enter an empty line to finish:
sairamrkshna mammahe

The text you introduced above was:
sairamrkshna mammahe

string.htm

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