Practical Exercise 3 (1) What is the value of this arithmetic expression? (-$x*$y+ $val[23]*$x-2.5)/($x+$y-Sx*Sy+38.5) Assume that $x, Sy and $val[23] are 4.5, -2 and 3.0 respectively. (2) Why is this assignment statement invalid? $res = "the value is ".$x+$y." pounds"; (3) What is the value of this logical expression? $x && $y XOR (SxlI$y) Assume that $x is TRUE and $y is FALSE (4) Write a For loop to output the squares of the first 20 even numbers. (5) Given an array of numbers $numbers and a variable $val write PHP statements to output the position of Sval in array $numbers or a statement that it is not in the array. Do this (a) using a While loop and (b) using a Do...While loop. (6) Write an If statement that takes a variable $month containing the name of a month, e.g. "October", and outputs the number of days it contains.

Practical Exercise 3 (1) What is the value of this arithmetic expression? (-$x$y+ $val[23]$x-2.5)/($x+$y-Sx*Sy+38.5) Assume that $x, Sy and $val[23] are 4.5, -2 and 3.0 respectively. (2) Why is this assignment statement invalid? $res = "the value is ".$x+$y." pounds"; (3) What is the value of this logical expression? $x && $y XOR (SxlI$y) Assume that $x is TRUE and $y is FALSE (4) Write a For loop to output the squares of the first 20 even numbers. (5) Given an array of numbers $numbers and a variable $val write PHP statements to output the position of Sval in array $numbers or a statement that it is not in the array. Do this (a) using a While loop and (b) using a Do...While loop. (6) Write an If statement that takes a variable $month containing the name of a month, e.g. "October", and outputs the number of days it contains.

Name: Practical Exercise 3(1) What is the value of this arithmetic expressi
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Description: Practical Exercise 3(1) What is the value of this arithmetic expression?(-$x*$y+ $val[23]*$x-2.5)/($x+$y-Sx*Sy+38.5)Assume that $x, $y and $val[23] are 4.5, -2 and 3.0 respectively.(2) Why is this assignment statement invalid?$res = "the value is ".

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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