i ←10                         while (i > 5)                                                       begin                               i ← i - 1                            end

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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Question

While making the trace, in each of the following cases indicate the number of repetitions.

  1. i ←10

                        while (i > 5)                           

                           begin

                              i ← i - 1

                           end         

 

Memory
Integer ?    
i > 5  Boolean ?    

 

Number of repetitions :

 

2.  i ← 0

                        do

                            begin

                              i ← i + 2

                           end

                       while (i <> i)  

 

Memory
Integer ?          
i <> i Boolean ?          
Number of repetitions :  

3.             i ←0

                do

                begin          
                  Write( i )

                   i  ←   i + 2  

                            end

                        until (i = 9)

Memory
i Integer ?    
i = 9 Boolean ?    

Number of repetitions :

 

4. For i ← 1 until 10   

Incrementation i ← i + 3

     begin          
      Write( i )         

        end

Memory
i Integer ?      
i <= 10 Boulean ?      

Number of repetitions :

 
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