The function getchar() reads a single character from the standard input device, the keyboard being assumed because that is the standard input device, and assigns it to the variable a. The following program illustrates the use of getchar function.
These symptoms may also be caused by benign thyroid nodules, infection or inflammation of the thyroid gland, or a goiter. Thyroid nodules are classified to ICD-9-CM code 241.0, Nontoxic uninodular goiter. If a nodule is with hyperthyroidism or thyrotoxicosis, assign code 242.1x.
For reporting purposes, head and neck cancers in ICD-O-3 code range C00.0 to C14.8 are often grouped together, while the paranasal sinuses and nasal cavity are grouped with the respiratory organs, and the thyroid gland is reported separately.