Computer Systems: A Programmer's Perspective (3rd Edition)
Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Chapter 8, Problem 8.24HW

Modify the program in Figure 8.18 so that the following two conditions are met:

  1. 1. Each child terminates abnormally after attempting to write to a location in the read-only text segment.
  2. 2. The parent prints output that is identical (except for the PIDs) to the following:

child 12255 terminated by signal·11: Segmentation fault

child 12254 terminated by signal·11: Segmentation fault

Chapter 8, Problem 8.24HW, Modify the program in Figure 8.18 so that the following two conditions are met: 1. Each child

Figure 8.18 Using the waitpid function to reap zombie children in no particular order.

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The template code defines a Time struct. Given main() that reads two Times and computes the difference between the two, complete the following two functions: main() provides ReadTime() to read input from a user and use the input to create a new Time by calling Create Time(). PrintTime() is provided to output Time in 24 hour format (hh:mm:ss). Ex: If the input is: the output is: 22 23 24 1 #include 2 #include 3 30 31 1. Time* CreateTime(int hours, int minutes, int seconds) o Allocate and return a new Time according to the parameters 2. Time* TimeDifference (Time* end, Time* start) o Allocate a new time to store the computed time difference 02 55 10 04 15 50 4 typedef struct Time_struct { 5 int hours; int minutes; int seconds; Time; 25 26 } 27 32 33 34 • Compute the amount of time elapsed from start to end. Assume start is always before end. o Adjust for negative minutes and seconds. o Return the pointer to Time that contains the difference 6 7 8 9 10 // ALLocate and return a Time as…
The Fibonacci sequence begins with 0 and then 1 follows. All subsequent values are the sum of the previous two, ex: 0, 1, 1, 2, 3, 5, 8, 13. Complete the fibonacci() function, which has an index n as parameter and returns the nth value in the sequence. Any negative index values should return -1. Ex: If the input is: 7 the output is: fibonacci (7) is 13 Note: Use a for loop and DO NOT use recursion.
The Fibonacci sequence begins with 0 and then 1 follows. All subsequent values are the sum of the previous two, ex: 0, 1, 1, 2, 3, 5, 8, 13. Complete the fibonacci() function, which has an index n as parameter and returns the nth value in the sequence. Any negative index values should return -1. Ex: If the input is: 7 the output is: fibonacci (7) is 13 Note: Use a for loop and DO NOT use recursion. 461710.3116374.qx3zqy7 LAB ACTIVITY 1 def fibonacci(n): 1234567 4 7.34.1: LAB: Fibonacci sequence 6 #Type your code here. 5 if __name__ start_num = '__main__': int(input()) main.py print(f'fibonacci ({start_num}) is {fibonacci (start_num)}') 0/10 Load default template...

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