Problem 2. Static and Dynamic ScopeConsider the following block. Assume call-by-value parameter passing.1 = {2345678910 e111213141516};int x;int y;int z;X = 4;y := 6;{ int f(int y) { return x*y };int y;};y = 13;{ int g(int x) { return f(y) };{int y;y = 14;z := g(3);};};a) Draw the runtime stack after each line executes under static scoping. What value assigned to z inline 12?b) Draw the runtime stack after each line executes under dynamic scoping. What value assigned toz in line 12?

Here, we have to answer two questions for the given program: a. Draw the runtime stack after each…

a) Draw the runtime stack after each line executes under static scoping. What value assigned to z in line 12? b) Draw the runtime stack after each line executes under dynamic scoping. What value assigned to z in line 12?

a) Draw the runtime stack after each line executes under static scoping. What value assigned to z in line 12? b) Draw the runtime stack after each line executes under dynamic scoping. What value assigned to z in line 12?

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

See similar textbooks

Similar questions

Implement in C Programming 6.10.1: Function pass by pointer: Transforming coordinates. Define a function CoordTransform() that transforms its first two input parameters xVal and yVal into two output parameters xValNew and yValNew. The function returns void. The transformation is new = (old + 1) * 2. Ex: If xVal = 3 and yVal = 4, then xValNew is 8 and yValNew is 10. #include <stdio.h> /* Your solution goes here */ int main(void) { int xValNew; int yValNew; int xValUser; int yValUser; scanf("%d", &xValUser); scanf("%d", &yValUser); CoordTransform(xValUser, yValUser, &xValNew, &yValNew); printf("(%d, %d) becomes (%d, %d)\n", xValUser, yValUser, xValNew, yValNew); return 0;}
Assume the following JavaScript program was interpreted using staticscoping rules. What value of x is displayed in function sub1? Underdynamic-scoping rules, what value of x is displayed in function sub1?var x;function sub1() {document.write("x = " + x + "");}function sub2() {var x;x = 10;sub1();}x = 5;sub2();
Write a C program that utilizes the ComplexNumber data type defined below, ----- Start of Data Type Definition ----- typedef struct _ComplexNumber { double real; // real part double imag; // imaginary part} ComplexNumber; ----- End of Data Type Definition ----- The following behavior should be implemented: Declare three ComplexNumber variables Initialize the first complex variable as follows: ---->> real part = 0.5, imaginary part = -0.5 ---->> Print the initialization info on the screen Initialize the second complex variable as follows: ---->> real part = -1.75, imaginary part = 0.5 ---->> Print the initialization info on the screen Calculate the sum of the first and second complex variables ---->> Store the results in the third complex variable ---->> Print the results on the screen Calculate the difference, i.e., first complex number minus…
Implement in C Programming 7.6.1: LAB: Simple car Given two integers that represent the miles to drive forward and the miles to drive in reverse as user inputs, create a SimpleCar variable that performs the following operations: Drives input number of miles forward Drives input number of miles in reverse Honks the horn Reports car status SimpleCar.h contains the struct definition and related function declarations. SimpleCar.c contains related function definitions. Ex: If the input is: 100 4 the output is: beep beep Car has driven: 96 miles main.c #include <stdio.h> #include "SimpleCar.h" int main() { /* Type your code here. */ return 0;} SimpleCar.h #ifndef SIMPLE_CAR_H#define SIMPLE_CAR_H typedef struct SimpleCar_struct { int miles;} SimpleCar; SimpleCar InitCar();SimpleCar Drive(int dist, SimpleCar car);SimpleCar Reverse(int dist, SimpleCar car);int GetOdometer(SimpleCar car);void HonkHorn(SimpleCar car);void Report(SimpleCar car); #endif SimpleCar.c #include…
write a C++ program. Write a program that calculates and displays the average of a group of test scores, all integers, after the lowest score in the group has been dropped. There are six test scores in the group. The program must contain only the following functions in additionto the main:• void getScore should ask the user for a test score, store it in a referenceparameter variable, and validate it. This function should be called by the mainfunction once for of the six scores to be entered by the user.• double calcAverage should calculate and return the average of the five highest scores. This function should be called just once by the main function, and should be passed the six scores. Use pass by reference to receive the lowest test score.• int findLowest should find and return the lowest of the six scores passed to it. It must be called by the calcAverage function, which uses it to determine which of the six scores to drop.• void displayResults should be called by the main function…
a c++ program for a (cafe system) that includes this specifications: -Functions (should include both: pass by value and pass by reference variables, void function and unction returning any value) - Array of structs (at least one single array of struct) - Selection and repetition structures as needed - Add your team members names as a comment in the first line of your program - You should print a menu to the user and offer him/her different services. - Main Services: 1-adding new item. 2-search for specific item. 3-update existing record. 4-delete. 5-Sort. 6-Display. 7-At the start, your program should populate the array(s) from a file and allow the user to edit it. At the end overwrite the same file with the latest contents of the array(s). 8-Provide another statistical report as separate text file e.g. the number of records, with date, time of last update. - The program should continue running until the user chooses to exit it. - Ensure to avoid any errors of any type (Run-time error,…
Write a c++ bank management program.And include these requirments: 400 line minimum (excluding spaces and new lines) Efficient use of classes. Use of Template\function\class Use of virtual function Use of static Data member Use of Inheritance. Use of 1 STL Data Structure (or own STL class) Use of exception error handling use of friend function
Write a complete C program that analyse the statistics of 5 YouTubers' debut video. The program should: Prompt the user to key in the number of views of 5 YouTubers' debut video. Identify which YouTuber has the minimum view - Apply non-return value function, include parameter list if necessary Identify which YouTuber has the maximum view - Apply non-return value function, include parameter list if necessary Calculate the average views - Apply return value function, include parameter list if necessary Determine whether the YouTuber is popular or not by comparing to the average views. If the YouTuber's debut video views are greater or equal to the average views, then the YouTuber is popular, else, not popular. Requirements: - Apply array - Apply string.h library SAMPLE OUTPUT: Enter no. of views for - YouTuber 1: 987 YouTuber 2: 1010 YouTuber 3: 3217 YouTuber 4: 4532 YouTuber 5: 899 Minimum: YouTuber 5 [899 views] Maximum: YouTuber 4 [4532 views] Average: 2129.00 views…
Write a complete C program that analyse the statistics of 5 YouTubers' debut video. The program should: Prompt the user to key in the number of views of 5 YouTubers' debut video. Identify which YouTuber has the minimum view - Apply non-return value function, include parameter list if necessary Identify which YouTuber has the maximum view - Apply non-return value function, include parameter list if necessary Calculate the average views - Apply return value function, include parameter list if necessary Determine whether the YouTuber is popular or not by comparing to the average views. If the YouTuber's debut video views are greater or equal to the average views, then the YouTuber is popular, else, not popular.
Answer the question with C - language. Question. In the following code, assume that all function calls are successful. void sigusr1_handler(int sig) { } int main(void) { pid_t child; if ((child = fork()) == 0) { struct sigaction sa; sa.sa_handler = sigusr1_handler; sa.sa_flags = 0; sigemptyset(&sa.sa_mask); sigaction(SIGUSR1, &sa, NULL); while (1) { printf("working ...\n"); sleep(1); } } else { //line 19 sleep(30); } // line 22 return 0; } (a) If you run the above program can it create either an orphan or a zombie process? Explain how. (b) Insert statements in only the part of the code related to the parent process (Lines 19–22) and function siguse1_handler() so that the child process would end after about 30 seconds of running. Clearly indicate where you insert any statements. thank you for your time
Exercise Write a C++ program to develop a Vehicle Fine Management System for Police. The program will havethe following features.1. A user defined function called “Student Registration”. This function prompts a user to enter astudent’s personal data i.e., Student Number, Student Name, Age and City and stores them.2. A user defined function called “Module Enrolment”. This function takes student number from themain function as an argument and prompts a user to enter student two modules details i.e. Modulename, Module Code and Module Credits Hours (15 or 30) and stores them. The programs shoulddisplay an error message if a user enters credit hour other than 15 or 30.3. A user defined function called “Student Assessment”. This function takes student number from themain function as an argument and prompts a user to enter Module 1 and Module 2 marks and storesthem.4. A user defined function which takes a Student ID and search option (1 for Personal data search, 2 forModule Search and 3 for…
Write a complete C program that analyse the statistics of 5 YouTubers’ debut video. The program should: (i) Prompt the user to key in the number of views of 5 YouTubers’ debut video. (ii) Identify which YouTuber has the minimum view - Apply non-return value function, include parameter list if necessary (iii) Identify which YouTuber has the maximum view - Apply non-return value function, include parameter list if necessary (iv) Calculate the average views - Apply return value function, include parameter list if necessary (v) Determine whether the YouTuber is popular or not by comparing to the average views. If the YouTuber’s debut video views are greater or equal to the average views, then the YouTuber is popular, else, not popular. Requirements: - Apply array - Apply string.h library SAMPLE OUTPUT: Enter no. of views for - YouTuber 1: 987 YouTuber 2: 1010 YouTuber 3: 3217 YouTuber 4: 4532 YouTuber 5: 899 Minimum: YouTuber 5 [899 views] Maximum: YouTuber 4…