Chapter 2, Problem 2.10E

State which of the following are true and which are false. If false, explain your answer.

1. C operators are evaluated from left to right.
2. The following are all valid variable names: _under_bar_, m928134, t5, j7, her_sales, his_account_total, a, b, c, z, z2.
3. The statement printf (“a = 5; “); is a typical example of an assignment statement.
4. A valid arithmetic expression containing no parentheses is evaluated from left to right.
5. The following are all invalid variable names: 3g, 87, 67h2, h22, 2h.