Chapter 2, Problem 2.10E

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

1. All 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. Statcmentcout<<"a = 5; "; is a typical example of an assignment statement.
4. A valid arithmetic expression with no parentheses is evaluated from left to right.
5. The following are all invalid variable names: 3g, 87, 67h2, h22, 2h.