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264: Sidetrip

Why, you might ask, do structure definitions end with a semicolon? After all, the final brace makes it clear where the structure definition ends:

                                        *---- Semicolon 
struct trade {double price; int number;}; 

One reason is that the semicolon syntax allows you to describe a structure and to define global variables using that structure in a single statement. In the following single statement, for example, the trade structure is defined and global variables t1 and t2 are defined to belong to the trade structure.

struct trade {double price; int number;} t1, t2; 

Thus, the semicolon tells C where the list of defined variables ends.