CSC001 - Worksheet 1 - Arithmetic Expressions

Name _________________________

CSC001- Worksheet 1: Arithmetic Expressions

D. Joseph
Fall 1998

Due: September 23 at beginning of lecture period
Total Points: 10

Part 1 - Evaluating QBASIC Statements

Evaluate the following QBASIC statements to two decimal places (if necessary).

1.	a + b * (c / a)	(a = 2, b = 3, c = 4)		ans =

2.	a + b * c / a	(a = 2, b = 3, c = 4)		ans =

3.	(a + b) * c / a	(a = 2, b = 3, c = 4)		ans =

4.	a ^ c * (a + c / b)	(a = 2, b = 4, c = 3)		ans =

5.	2.5 - 18 / 2 ^ 3 * (4 + 1)			ans =

6.	3.5 * 2 - (12 / 4 * 6 / 2) ^ (1 - 5 / 2 + 2)			ans =

7.	(b + c) * (c + a) * (a - b) * (a - c)		(a = 4, b = 4, c = 2) ans =

Part II - Converting Arithmetic Expressions into QBASIC Statments

Write QBASIC statements for the following arithmetic expressions. Assume A, B, C, D, X, Y, and Z are separate variables..

8.	A * C		B * D
	-----------	+	-----------
	B + D		A + D

9.	C = A^{^²⁽⁵⁾} / B

10.	ABC + XYZ

11.	result = square root (ABC)

12.	AX + BY^{^⁴} - Z

13.		1		D
	answer =	-----------	-	-----------
		3 - C		3 + B

14.		4^{^²} - X
	Z =	-----------
		Y - 9

Part III - Determining Validity as QBASIC Expression

Are the following expressions acceptable or inaacceptable in QBASIC? If the expression is not acceptable as a QBASIC expression please explain why. Assume A, B, C, D, X, Y, and Z are separate variables.

15.	A * B / - C * D

16.	( A + ( B / ( C + D ) )

17.	ABCD

18.	X / Y + Z

19.	( ( A + ( B ) ) + ( C * D ) )

20.	A ^ 2 + B^{^³}

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September 11, 1998
Comments to: josephd@csus.edu