**`clear()`** is a member function of the `basic_string` class in the Standard Template Library. It takes no parameters and it returns a string with zero characters (i.e., an empty string) regardless of the content of the input string. This is equivalent to assigning an empty string to a variable.

# Syntax

``` C++
your_string_variable.clear();
```

# Code


#include <iostream>
#include <string>

int main()
{
    std::string my_string1 = "Happy Learning at Educative!";
    
    std::cout<<"Contents of string BEFORE clearing: " << my_string1<<"\n";
    my_string1.clear();
    std::cout<<"Contents of string AFTER clearing: " << my_string1 <<"\n"; 

    if(my_string1.empty())
        std::cout<<"string is empty";
    else
        std::cout<<"string is not empty";
}

## Explanation

The code above demonstrates how the `clear()` member function can be used. The first string contains a phrase and, using the `clear()` function, the string is emptied. 

Upon printing the same string after applying the `clear()` function, an empty string is returned. The `if-else` statements check if a specific string is empty, and print a message accordingly.

What is std::basic_string::clear in C/C++?

Clears all characters from a string, resulting in an empty string without parameters.