Operators will be covered later in this chapter; however, it is useful to introduce the comma operator here. You can have a sequence of expressions separated by a comma as a single statement. For example, the following code is legal in C++:
int a = 9; int b = 4; int c; c = a + 8, b + 1;
The writer intended to type c = a + 8 / b + 1; and : they pressed comma instead of a /. The intention was for c to be assigned to 9 + 2 + 1, or 12. This code will compile and run, and the variable c will be assigned with a value of 17 (a + 8). The reason is that the comma separates the right-hand side of the assignment into two expressions, a + 8 and b + 1, and it uses the value of the first expression to assign c. Later in this ...
