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What is basic_string::empty in C/C++?
Naima Abrar
empty() is a member function of the basic_string class template in the standard template library. It returns a bool that indicates whether or not a string is empty, i.e., it returns true if the string has zero characters in it.
Syntax
your_string_variable.empty();
Code explanation
The following code demonstrates how the empty() member function can be used. The first string contains a phrase and the second string contains a
The if-else statements can be used to check if a specific string is empty and print a message accordingly.
Code
#include <iostream>
int main()
{
std::string my_string1 = "Happy Learning at Educative!";
std::string my_string2 = " "; //contains a space
std::string my_string3 = "";
std::cout<<"is my_string1 empty? "<<my_string1.empty()<<"\n";
std::cout<<"is my_string2 empty? "<<my_string2.empty()<<"\n";
std::cout<<"is my_string3 empty? "<<my_string3.empty()<<"\n";
if(my_string1.empty())
{
std::cout<<"my_string1 is empty! "<<"\n";
}
else
{
std::cout<<"my_string1 is not empty! "<<"\n";
}
}RELATED TAGS
c++
string
empty
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