Q2: What is the output for the following codes:1-int arr[4]= {2, 6, 7, 8};for (int i= 3; i>=0; i--)cout<

THIS IS THE MULTIPART QUESTION. ONLY FIRST THREE PARTS ARE SOLVED. KINDLY SEND THE REMAINING…

Answered: Q2: What is the output for the…

Q2: What is the output for the following codes: 1- a) 2 6 7 8 c) 2 6 7 int arr[4]= {2, 6, 7, 8}; for (int i= 3; i>=0; i--) cout<

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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#include <stdio.h>#include <stdlib.h> int MAX_SIZE = 10;int n = 0; //A counter variable which will keep track of number of elements in arr. void append(int *arr, int element){ if(n == MAX_SIZE) { MAX_SIZE = MAX_SIZE * 2; int *ptr = (int*)malloc(MAX_SIZE * sizeof(int)); //Copy elements of existing array to a new array for(int i=0;i<n;i++) { ptr[i] = arr[i]; } arr = ptr; n++; } arr[n] = element;} int get(int *arr, int index){ return arr[index];}int main(){ int *arr = (int*)malloc(MAX_SIZE * sizeof(int)); n = 10; for(int i=0;i<n;i++) arr[i] = i+1; printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n); printf("\nArray: "); for(int i=0;i<n;i++) printf("%d ", arr[i]); printf("\n\nAdding an element"); append(arr, 11); printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n);…
1. What is the output of the following code segment: char* s [] = { "NBY", "SDT"}; const char** z = s; const cout << z [1] [1]; cout << cout << a. DSDT b. DTY c. DTBY d. DTS e. *(z [1]+ 2); (*z + 1); None of the above
#include <stdio.h>#include <string.h> int findRepeat(char* s){int p , i , j; p = -1; for (i = 0 ; i < strlen(s) ; i++){for (j = i + 1; j < strlen(s); j++){if (s[i] == s[j]){p = i;break;}}if (p != -1)break;}return p;} int main(){char str[] = "Hello World";int pos = findRepeat(str);if (pos == -1)printf("Not found");elseprintf("%c", str[pos]);return 0;}can you please explain this code for me
#include <iostream>//#include <vector> using namespace std; class Vec {public:Vec() {sz = 0;cap = 1;p_arr = new int[cap];} int size(){return this->sz;}int capacity(){return this->cap;}void reserve( int n ){// TODO:// (0) check the n should be > size, otherwise// ignore this action.if ( n > sz ){// (1) create a new int array which size is n// and get its address//cout << "Adress:"<< &n << endl;int *newarr = new int [n];//cout << "Address: " << newarr << endl; // location // (2) use for loop to copy the old array to the// new arrayfor(int i = 0; i < sz; i++){newarr[i] = p_arr[i];}// (3) update the variable to the new addressthis->cap=n; // (4) delete old arraydelete[] newarr;}}void push_back( int v ){// TODO:if ( sz == cap ){ cap *= 2; reserve(cap);}p_arr[sz++] = v;// complete others}int at(int idx){return this->p_arr[idx];}private://vector<int> arr;int *p_arr;int sz = 0;int cap = 0; }; int main(){Vec v;…
#include using namespace std; int find(int arr[], int value, int left, int right) { int midpt = (left+right)/2; if (left > right) return -1; if ( arr[midpt] return midpt; else if (arr[midpt] < value) == value) return else return find(arr,value, left,midpt-1); } void main(void) { int arr[] ={4,5,6,9,11}; cout<
Explain the code and how it works: #include <iostream>#include <cmath> using namespace std;double to_kilograms(double n){ return n * 0.453592;}double to_pounds(double n){ return n * 2.20462;}double to_kilograms_ref(double& n){ return n * 0.453592;}double to_pounds_ref(double& n){ return n * 2.20462;}double to_kilograms_ptr(double* n){ return *n * 0.453592;}double to_pounds_ptr(double* n){ return *n * 2.20462;} void display_menu(){ cout << "1.Kilograms to Pounds (pass by value)\n2. Pounds to Kilograms (pass by value)\n3. Kilograms to Pounds (pass by reference)\n4. Pounds to Kilograms (pass by reference)\n5. Kilograms to Pounds (using pointers)\n6. Pounds to Kilograms (using pointers)\nEnter choice\n\n";} void convert(){ int ch; double w; cout << "Enter a menu option: "; cin >> ch; cout << "Enter weight: "; cin >> w; if (ch == 1) cout << "weight in kg is " << to_kilograms(w);…
5- int arr[4]= {2, 4, 5, 3); for (int i= 0; i<4; i++) cout<
#include <stdio.h>#include <stdlib.h> int MAX_SIZE = 10;int n = 0; //A counter variable which will keep track of number of elements in arr. void append(int *arr, int element){ if(n == MAX_SIZE) { MAX_SIZE = MAX_SIZE * 2; int *ptr = (int*)malloc(MAX_SIZE * sizeof(int)); //Copy elements of existing array to a new array for(int i=0;i<n;i++) { ptr[i] = arr[i]; } arr = ptr; n++; } arr[n] = element;} int get(int *arr, int index){ return arr[index];}int main(){ int *arr = (int*)malloc(MAX_SIZE * sizeof(int)); n = 10; for(int i=0;i<n;i++) arr[i] = i+1; printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n); printf("\nArray: "); for(int i=0;i<n;i++) printf("%d ", arr[i]); printf("\n\nAdding an element"); append(arr, 11); printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n);…
Given the following declaration : char msg[100] = "Department of Computer Science"; What is printed by: strcpy_s(msg, "University"); int len = strlen(msg); for (int i = len-3; i >0; i--) { msg[i] = 'x'; } cout << msg;
#include<iostream>using namespace std;const int rows=10;const int columns=10;int computer_board1[rows][columns];int computer_board2[rows][columns];int player_board[rows][columns];int x,y;void setboard(){for(int i=0;i<rows;i++){for(int j=0;j<columns;j++){computer_board1[i][j]=0;player_board[i][j]=0;}}}void display_computer_board1(){cout<<"Computer's Board"<<endl;cout<<" 0 1 2 3 4 5 6 7 8 9 "<<endl;for(int i=0;i<rows;i++){for(int j=0;j<columns;j++){if(j==0){cout<<i<<" ";}cout<<computer_board1[i][j]<<" "; }cout<<endl;}cout<<endl;}void display_player_board(){cout<<"Your Board"<<endl;cout<<" 0 1 2 3 4 5 6 7 8 9 "<<endl;for(int i=0;i<rows;i++){for(int j=0;j<columns;j++){if(j==0){cout<<i<<" ";}cout<<player_board[i][j]<<" "; } cout<<endl;} }void place_player_ships(){for(int i=1;i<=15;i++){cout<<"Horizontal…
#include <stdio.h>#include <string.h>#define SIZE 6struct Cake {char name[50];float price;};int searchChoice(char *choice, struct Cake data[]);void displayChoice(int index, struct Cake data[]);int main() {char choice[50];int index;//Answer for Part (i) – Declare and initialise array stockprintf("What is your choice of cake? ");gets(choice);index = searchChoice(choice, stock);displayChoice(index, stock);return 0;}//Answer for Part (ii) – Function definition for searchChoice//Answer for Part (iii) – Function definition for displayChoice
1. Examine the following code segment. What will be printed?If there are any errors indicate the nature of the error. int a[8] ={16, 12, 10, 7, 15, 18, 17, 29}; int *ptr ; ptr = & a[ 5 ] ; for(int i = 0; i<= 4; i = i + 2) cout<<a[i]<<*( ptr + i )<<endl; cout<<” ”<<a[1]<<” ”<<*ptr<<” ”<<*ptr + 2<<” ”<<*(ptr + 3);