Many times a programmer is given an algebraic formula, and must write an assignment statement that will correctly calculate the answer.
After writing a statement, check it by hand, using sample values verify that the equation is correct.
Use the following guidelines to convert algebraic expressions to programming statements:
| Algebra | Program | Explanation |
|---|---|---|
| XY | x*y | Algebra uses single letters for variables, and can omit the *, programming languages always require an operator. |
| X·Y | x*y | Algebra sometimes uses a dot for multiplication. |
 |
x*x or x^2 | Use ^ to raise to a power. |
 |
x^n | Use ^ to raise to a power. |
 |
Math.Sqrt(x) | Use Math functions for square root. You will see others after you type Math. |
 |
(a+b)/c | Compound numerators and divisors must be enclosed in parenthesis: Notice the difference between this example and the one below: |
 |
a/c+b | Notice the difference between this example and the one above. |
Remember: Algebra uses single letters for variables: programmers should use good variable names wherever possible!
Arithmetic Operations