What is a null string? A string is null if it has not been assigned a value (in C++ and Visual Basic) or if has explicitly been assigned a value of null. Although the composite formatting feature can gracefully handle a null string, as the following example shows, attempting to call one if its members throws a NullReferenceException. C#.
Both asthma and vocal cord dysfunction can make breathing difficult. Signs and symptoms of either condition can include coughing, wheezing, throat tightness and hoarseness, but they're two separate disorders.Vocal cord dysfunction is the abnormal closing of the vocal cords when you breathe in or out. It's also called laryngeal dysfunction, paradoxical vocal cord movement disorder or paradoxical vocal cord motion. Like asthma, vocal cord dysfunction can be triggered by breathing in lung ...
Vocal Cord Disorders. The vocal cords (also called vocal folds) are two bands of smooth muscle tissue found in the larynx (voice box). The larynx is set in the neck at the top of the trachea (windpipe). The vocal cords vibrate and air passes through the cords from the lungs to produce the sound of your voice. The sound is then sent through the throat, nose, and mouth, giving the sound resonance..