C++ String empty() function

by Online Tutorials Library July 22, 2022

C++ String empty()

This function checks whether the string is empty or not. Function returns a Boolean value either true or false.

Syntax

Consider a string str. Syntax would be:

Parameter

This function does not contain any parameter.

Return value

It returns a Boolean value either 0 or 1 depending upon the conditions.

Example 1

  #include<iostream>      using namespace std;       int main()      {        string str1;       if(str1.empty())      cout<<“String is empty”;      else  cout<<“String is not empty”;  return 0;}  

Output:

String is empty

This example shows how to check the string whether it is empty or not by using empty() function.

Example 2

  #include<iostream>  using namespace std;  int main()  {  string str1=”Hello TutorAspire “;              if(str1.empty())  cout<<“String is empty”;  else  cout<<“String is not empty”;  return 0;  }  

Output:

String is not empty

This example checks whether the string is empty or not by using empty() function.

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