20091120-Primitives-II

20091120-Primitives-II - CSE115: Introduction to Computer...

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CSE115: Introduction to Computer Science I Dr. Carl Alphonce 219 Bell Hall Office hours: M-F 11:00-11:50 645-4739 [email protected]
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Agenda Today: Signed integral types •two’s complement representation
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int values: 0, 1, -1, 2, - 2, … maximum int: 2147483647 = +2 (32-1) -1 minimum int: -2147483648 = -2 (32-1) operations: + - * / % 5+2 = 7 +: (int,int) int 5-2 = 3 -: (int,int) int 5*2 = 10 *: (int,int) int 5/2 = 2 (quotient) /: (int,int) int 5%2 = 1 (remainder) %: (int,int) int
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representation used differs according to whether type is signed (byte, short, int, long) or unsigned (char): – signed integral values are represented using “two’s complement” representation – unsigned integral values are represented using “binary” representation size of representation differs according to type: byte is 1 byte wide (1 byte = 8 bits) short is 2 bytes wide int is 4 bytes wide long is 8 bytes wide
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This note was uploaded on 02/13/2011 for the course CSE 115 taught by Professor Decker during the Fall '08 term at SUNY Buffalo.

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20091120-Primitives-II - CSE115: Introduction to Computer...

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