In C++, strings are the sequence of characters that are stored as std::string class objects. In this article, we will learn how to check if a string is empty in C++

Example

Input: str1="Hello! Geek" ; str2=""

Output: 
str1 is not empty
str2 is empty

Checking if the String is Empty in C++

To check for an empty string we can use the std::string::empty() function because what the empty function does is it checks for the length of a string and if the string is empty, it returns true, otherwise, it returns false.

C++ Program to Check for Empty String

The below example demonstrates the use of the empty function to check for empty string.

str1 is not empty
str2 is empty

We can also use compare() and size() functions to check if string is empty.