Data structures and algorithms in C++
Data structures and algorithms in C++
2nd Edition
ISBN: 9780470460443
Author: Goodrich
Publisher: WILEY
Question
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Chapter 1, Problem 1R
Program Plan Intro

The variables:

  • The variable is a named location in a memory. In this location the program can manipulate the data.
  • This location holds the value of the variable.
  • The value of the variable gets changed in the program.
  • The C++ variable can be any type like “int”, “float”, “char” and so on.

Expert Solution & Answer
Check Mark

Explanation of Solution

Rules for naming the C++ variable:

  • The name of the variable must begin with a letter or underscore.
  • The name of the variables is case sensitive.
  • The name of the variable can be constructed with digits and letters.
  • Special symbols other than underscore are not allowed in the variable name.
  • Valid variable names are, “i_think_i_am_valid”, “i_may_have_2_many_digits_2_be_valid”, “_I_start_and_end_with_underscores_”, “I_AM_LONG_AND_HAVE_NO_LOWER_CASE LETTERS”
  • Example for invalid variable name is “I_Have_A_Dollar_$ign”. This is invalid because the name contains the special character “$”.

From the given set of variable names, the invalid variable name is “I_Have_A_Dollar_$ign”. Hence the correct option is “d”.

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Dijkstra's Algorithm (part 1).  Consider the network shown below, and Dijkstra’s link-state algorithm. Here, we are interested in computing the least cost path from node E (note: the start node here is E) to all other nodes using Dijkstra's algorithm. Using the algorithm statement used in the textbook and its visual representation, complete the "Step 0" row in the table below showing the link state algorithm’s execution by matching the table entries (i), (ii), (iii), and (iv) with their values.  Write down your final [correct] answer, as you‘ll need it for the next question.
4. |z + 5 - 5i| = 7
14. dz, C: |z❘ C: |z❘ = 0.6 ze² - 2iz H

Chapter 1 Solutions

Data structures and algorithms in C++

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