Write a program that prompts the user to enter a positive integer and obtains its square root in simplest form. For example, the simplest form for is 3 is, for is 2, and for 3is 18. Here are some sample runs: Enter a positive integer: 1300 sqrt (1300) is 10*sqrt (13) <Еnd Outpu> Enter a positive integer: 31 sqrt (31) is sqrt (31) Еnd Outpu> Enter a positive integer: 64 sqrt (64) is 8 <Еnd Outpu

Write a program that prompts the user to enter a positive integer and obtains its square root in simplest form. For example, the simplest form for is 3 is, for is 2, and for 3is 18. Here are some sample runs: Enter a positive integer: 1300 sqrt (1300) is 10*sqrt (13) <Еnd Outpu> Enter a positive integer: 31 sqrt (31) is sqrt (31) Еnd Outpu> Enter a positive integer: 64 sqrt (64) is 8 <Еnd Outpu

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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Write a program that calculates the equivalent resistance of a circuit. n electrical resistors with resistance values R1, R2,.., Rn are said to be connected in parallel if the same voltage is applied across each. Their equivalent resistance Reg is related to the values R1, R2, ..., Rn by: 1 1 1 1 + +...+ R R R, R. "eq Write a program that prompts the user to enter the resistance of n resistors. The user should be prompted continuously by using a while loop until a zero or negative value is entered (the program should count the number of resistors n entered by the user and store the values in an array). Use another separate loop to print the resistance values entered by the user and the equivalent resistance Reg. Test your program with R1= 1 kn, R2= 2 kn, R3= 4 kQ and R4= 8 kQ.
Write a program that reads from the user a character (‘s’ or ‘a’). ∙ If the character is ‘s’, the program reads 4 numbers from keyboard and then finds their sum. ∙ If the character is ‘a’, the program reads 4 numbers from keyboard and then finds their average. ∙ Otherwise, it prints “Wrong character” Sample Run: Sample Run1: Enter a character (s or a): s Input 4 numbers: 10.5 12 31 44 The sum of these 4 numbers is: 97.5 Sample Run2: Enter a character (s or a): a Input 4 numbers: 10 12 31 44 The average of these 4 numbers is: 24.375 Sample Run3: Enter a character (s or a): d Wrong character
Write a program that reads student scores, gets the best score, andthen assigns grades based on the following scheme:Grade is A if score is ≥ best -5Grade is B if score is ≥best -10;Grade is C if score is ≥best -15;Grade is D if score is ≥best -20;Grade is F otherwise.The program prompts the user to enter the total number of students, and thenprompts the user to enter all of the scores, and concludes by displaying the grades.Here is a sample run: Enter the number of students: 4 ↵EnterEnter 4 scores: 40 55 70 58 ↵EnterStudent 0 score is 40 and grade is FStudent 1 score is 55 and grade is CStudent 2 score is 70 and grade is AStudent 3 score is 58 and grade is C
Write a program that prompts the user to enter an integer anddisplays whether the integer is an odd number or not. Here are the sample runs: Enter an integer: 200 ↵Enter200 is even number Enter an integer: 211 ↵Enter211 is odd number
Given a square matrix with the elements 0 or 1, write a program tofind a maximum square submatrix whose elements are all 1s. Your programshouldprompt the user to enter the number of rows in the matrix. The program then displaysthe location of the first element in the maximum square submatrix and thenumber of rows in the submatrix. Here is a sample run: Enter the number of rows in the matrix: 5 ↵EnterEnter the matrix row by row:1 0 1 0 1 ↵Enter1 1 1 0 1 ↵Enter1 0 1 1 1 ↵Enter1 0 1 1 1 ↵Enter1 0 1 1 1 ↵EnterThe maximum square submatrix is at (2, 2) with size 3 Your program should implement and use the following method to find the maximumsquare submatrix:public static int[] findLargestBlock(int[][] m)The return value is an array that consists of three values. The first two values arethe row and column indices for the first element in the submatrix, and the thirdvalue is the number of the rows in the submatrix.
Write a program that reads from the user a character ('q' or 'c'). If the character is 'c', the program reads from the user the radius rof a circle and prints its area. • If the user enters 'q', the program asks the user to enter the length and width of a quadrilateral. We assume the quadrilateral is either a square or rectangle. You should print if the quadrilateral is square or rectangle. • Otherwise, it prints "Wrong character" PS: Use the following formulas: area of circle=3.14*r Sample Run1: Enter a character (q or c): q Enter the Length and Width: 80 150 |It is a rectangle Sample Run2: Enter a character (q or c): q Enter the Length and Width: 80 80 It is a square Sample Run3: Enter a character (q or c): c Enter the radius: 2 The area of the circle is 12.56 Sample Run4: Enter a character (q or c): d Wrong character
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Given the sample code below in generating a random number. Create a program that lets the user play the game of Rock, Paper, Scissors against the computer. The program should work as follows. 1. When the program begins, a random number in the range of 1 through 3 is generated.If the number is 1, then the computer has chosen rock. If the number is 2, then thecomputer has chosen paper. If the number is 3, then the computer has chosen scissors.(Don’t display the computer’s choice yet.)2. The user enters his or her choice of “rock”, “paper”, or “scissors” at the keyboard.(You can use a menu if you prefer.)3. The computer’s choice is displayed.4. A winner is selected according to the following rules:a. If one player chooses rock and the other player chooses scissors, then rock wins.(The rock smashes the scissors.)b. If one player chooses scissors and the other player chooses paper, then scissorwins. (Scissors cuts paper.)c. If one player chooses paper and the other player chooses rock, then…
3. Write a program that reads an integer between 0 and 1000 and adds all the digits in the integer. For example, if an integer is 932, the sum of all its digits is 14. Hint: Use the % operator to extract digits, and use the / operator to remove the extracted digit. For instance, 932 % 10 = 2 and 932 / 10 = 93. A sample run: Enter a number between 0 and 1000: 999 The sum of the digits is 27
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