Test1-Solutions

# Test1-Solutions - CS 303E(Mitra Test 1 Fall 2010 Last Name...

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CS 303E (Mitra) Test 1 Fall 2010 Last Name:____________________________________________ First Name:____________________________________________ UT EID: ____________________________ Section 52220: MWF 1200 - 0100 Section 52225: MWF 0200 - 0300 Section: __________________________ Question # Score Question # Score 1 / 10 5 / 10 2 / 15 6 / 20 3 / 15 7 / 20 4 / 10 8 / 5 Total / 100 1

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Ques 1. (10 pt) a) Convert 109 in decimal to binary and hexadecimal. 109 10 = 1101101 2 = 6D 16 b) Use the result above to express -109 in 2’s complement 8-bit binary representation -109 10 = 10010011 Ques 2. (15 pt) Define variables from the following descriptions. The variables should have a descriptive name and a value. a) The human body temperature of 98.4. bodyTemp = 98.4 b) The number of inches in a yard (1 yard = 3 feet, 1 foot = 12 inches) inches = 36 c) The speed limit in a school zone (20 m.ph.) speedLimit = 20 d) The name of UT’s mascot mascot = "Bevo" e) The result of determining if 123 is a prime number or not. isPrime = False 2
Ques 3. (15 pt) Suppose a, b, c, d are integer variables initialized to 2, 4, 3, and 1 respectively. The ASCII code for ‘0’ is 48, ‘A” is 65, and ‘a’ is 97. Evaluate the following expressions: i) ( (a % d) + (d % a) ) ** (b / a) + (c / d) = (0+1)**2 + 3 = 4 common error: the priority of operators. ** has higher priority than +.

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