Python Programming: An Introduction to Computer Science
Python Programming: An Introduction to Computer Science
3rd Edition
ISBN: 9781590282779
Author: John Zelle
Publisher: Franklin Beedle & Associates
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Chapter 8, Problem 10PE
Program Plan Intro

Fuel efficiency of a multi-leg journey

Program Plan:

  • Declare the “MPG” function.
    • Assign the values to the variables.
    • Iterate the “for” loop until it reaches the last line in the text file.
      • Set the value.
    • Check “leg” is not equal to newline.
      • In “try” block,
        • Split the odometer reading and amount of gas from the user input and assign it into the separate variables.
        • Increment the “count” value.
        • Calculate the distance traveled, total distance.
        • Calculate the MPG for leg.
        • Set the new odometer reading.
        • Display the leg.
        • Add values to trip total.
        • Break the function.
          • In exception block, break the function.
          • Return the value to the main function.
  • Declare a main function. Inside the main function,
    • Get the input file name from the user.
    • Open the file.
    • Get the starting odometer reading from the user.
    • Call the function “MPG”.
    • Calculate the total MPG.
    • Display the result.
  • Call the main function.

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Exercise 1 Function and Structure [30 pts] Please debug the following program and answer the following questions. There is a cycle in a linked list if some node in the list can be reached again by continuously following the next pointer. #include typedef struct node { int value; struct node *next; } node; int 11_has_cycle (node *first) if (first == node *head = { NULL) return 0; first; while (head->next != NULL) { } if (head first) { return 1; } head = head->next; return 0; void test ll_has_cycle () { int i; node nodes [6]; for (i = 0; i < 6; i++) { nodes [i] .next = NULL; nodes [i].value = i; } nodes [0] .next = &nodes [1]; nodes [1] .next = &nodes [2]; nodes [2] .next = &nodes [3]; nodes [3] .next nodes [4] .next &nodes [4]; NULL; nodes [5] .next = &nodes [0]; printf("1. Checking first list for cycles. \n Function 11_has_cycle says it has s cycle\n\n", 11_has_cycle (&nodes [0])?"a":"no"); printf("2. Checking length-zero list for cycles. \n Function 11_has_cycle says it has %s…
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