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 Conditions. The vocal cords are two bands of smooth muscle tissue located in the larynx, which is located at the top of the windpipe. Vocal cords produce sound by vibrating as air passes through the vocal cords from the lungs. Each personâs unique voice is determined by the size and shape of the vocal cords, throat, nose, and mouth. Vocal cord disorders are often caused by vocal abuse or misuse, such as excessive use of voice when singing, talking, yelling, smoking, or coughing.