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.
Code N63 (Unspecified lump in breast) is used not only for lumps but also for masses and nodules. This is in contrast to ICD-9-CM, where lumps and masses are reported with code 611.72 (Lump or mass in breast), but nodule is reported with code 793.89 [Other (abnormal) findings on radiological examination of breast].