Given the following combo box and its HTML source code:Choose an item:-choose - vYou have to choose from the list coption value='x'>- choose -Save Data)Choose an item: coption value 20'>FregWhich one of the following statements validates this data input assumingthat Serrors is the array for storing error messages?Select one:O if(!isset($_POST['itmId'])) $errors[]="Select an item";O if(empty($_POST['itmīd'])) Serrors[]="Select an item";O if($_POST['itmId'] == 'x') $errors[]="Select an item ";O if(in_array($error, $itmīd)) Serrors[]=Select an item";

f($_POST['itmId']== 'x') $errors[]="select and item"; Step 2Explanation: If the value of itemId is x…

Answered: Cho from the list cop cop cop

Engineering

Computer Science

Cho from the list cop cop cop

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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rite a function numPairs that accepts two arguments, a target number and a list of numbers. The function then returns the count of pairs of numbers from the list that sum to the target number. In the first example the answer is 2 because the pairs (0,3) and (1,2) both sum to 3. The pair can be two of the same number, e.g. (2,2) but only if the two 2’s are separate twos in the list.In the last example below, there are three 2’s, so there are three different pairs (2,2) so there are 5 pairs total that sum to 4. Sample usage: >> numPairs( 3, [0,1,2,3] )2
hi I really need help with this assignment problem flip_matrix(mat:list)->list You will be given a single parameter a 2D list (A list with lists within it) this will look like a 2D matrix when printed out, see examples below. Your job is to flip the matrix on its horizontal axis. In other words, flip the matrix horizontally so that the bottom is at top and the top is at the bottom. Return the flipped matrix. To print the matrix to the console: print('\n'.join([''.join(['{:4}'.format(item) for item in row]) for row in mat])) Example: Matrix:W R I T XH D R L GL K F M VG I S T CW N M N FExpected:W N M N FG I S T CL K F M VH D R L GW R I T X Matrix:L CS PExpected:S PL C Matrix:A D JA Q HJ C IExpected:J C IA Q HA D J
"Data Structure" Using the structures of student information “struct student“, write a C program(s) to perform each of the following operations. with comments please: (comments are very important ..thank you) >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1- Create a sorted linked list using tenPerson array (copy from array into the linked list will be done). 2-Append an element to the end of a list
Q3 Racket Number Function Suppose that into the Racket evaluator we enter the definition: (define dozen 12) Give the value of the Racket expression: (number? dozen). Note that the value should be consistent with the Racket language. Enter your answer here Save Answer Q4 Racket Empty Lists Give two ways to write a Racket expression of which the value is a one-element list with the empty list as its element. Enter your answer here Save Answer
I was given the below code in c++, //used headesr#include<iostream>#include<string>using namespace std; //queueu structstruct queue{ //to store each order data string ord_name; string ord_dsc; float ord_total; float ord_tip; string ord_date; //next and previouse order record queue *next; queue *prev;}; //to hold first node address of linklistqueue *root; //function to check is queu empty or notbool is_Empty(){ if (root == NULL) return true; else return false;} //function to add ordervoid addOrder(){ queue *order = new queue(); cout << "\nName on order: "; cin.ignore(); getline(cin, order->ord_name); cout << "\nOrder description: "; getline(cin, order->ord_dsc); cout << "\nOrder Total (integer): "; cin >> order->ord_total; cout << "\nOrder Tip (integer): "; cin >> order->ord_tip; cout << "\nDate of order: "; cin.ignore(); getline(cin,…