QUESTION 15 Analyze the code and answer the questions that follow: int value = 1; do { System.out.printf("%n%d", value); System.out.printf("%nEnter a positive value or -1 to exit: value = keyboard.nextInt(); }while (value > -1); //END do..while "); 1) The sentinel value is 2) After -1 is entered at the prompt, the loop will iterate more time(s).

QUESTION 15 Analyze the code and answer the questions that follow: int value = 1; do { System.out.printf("%n%d", value); System.out.printf("%nEnter a positive value or -1 to exit: value = keyboard.nextInt(); }while (value > -1); //END do..while "); 1) The sentinel value is 2) After -1 is entered at the prompt, the loop will iterate more time(s).

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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char letter1; char letter2; letter1 = 'y'; while (letter1 <= 'z') { letter2 = 'a'; while (letter2 <= 'c'){ System.out.print("" + letter1 + letter2 + " "); ++letter2; } ++letter1; } For this code why did we use "" before and after in this line? System.out.print("" + letter1 + letter2 + " "); ++letter2; What if we don't use the blank quotation would the output be same? because I don't see the reason for putting those quotation mark.
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