Recitation5

Recitation5 - CS180 Recitation CS180 gta Selection...

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Unformatted text preview: CS180 Recitation CS180 gta Feb 10, 2012 Selection Statements if block 1 i f ( boolean expression ) { 2 // if condition evaluated to true 3 } if..else block 1 i f ( boolean expression ) { 2 // if condition evaluated to true 3 } else { 4 // if condition evaluated to false 5 } Selection Statements Examples if block 1 int a = 10; 2 int b = 20; 3 i f ( a > b ) { 4 System . out . p r i n t l n ( ” a i s greater than b ” ) ; 5 } if..else block 1 int a = 10; 2 int b = 20; 3 i f ( a > b ) { 4 System . out . p r i n t l n ( ” a i s greater than b ” ) ; 5 } else { 6 System . out . p r i n t l n ( ” a i s less than or equal to b ” ) ; 7 } Selection Statements Examples if else chain 1 int a = 10; 2 i f ( a > 90) { 3 System . out . p r i n t l n ( ” a i s greater than 90 ” ) ; 4 } else i f ( a > 80) { 5 System . out . p r i n t l n ( ” a > 80 , but < = 90 ” ) ; 6 } else i f ( a > 70) { 7 System . out . p r i n t l n ( ” a > 70 , but < = 80 ” ) ; 8 } else i f ( a > 60) { 9 System . out . p r i n t l n ( ” a > 60 , but < = 70 ” ) ; 10 } Selection Statements Examples if else nesting 1 i f ( a > 90) { 2 i f ( b < 50) { 3 i f ( c > 30) 4 System . out . p r i n t ( ” a > 90 b < 50 and c > 30 ” ) ; 5 } 6 } Are these equivalent? 1 i f ( a > 90 && b < 50 && c > 30) { 2 System . out . p r i n t ( ” a > 90 b < 50 and c > 30 ” ) ; 3 } Selection Statements Given three values, find the max 1 i f ( a > b ) { 2 i f ( a > c ) { 3 System . out . p r i n t l n ( ”Max i s ” + a ) ; 4 } else { // c >= a 5 System . out . p r i n t l n ( ”Max i s ” + c ) ; 6 } 7...
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This note was uploaded on 02/19/2012 for the course CS 180 taught by Professor Staff during the Spring '08 term at Purdue.

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Recitation5 - CS180 Recitation CS180 gta Selection...

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