C++ String empty() function

C++ String empty() function tutorial for beginners and professionals with examples on constructor, if-else, switch, break, continue, comments, arrays, object and class, exception, static, structs, inheritance, aggregation etc.

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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:

str.empty();

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 javaTpoint";
            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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