6. What will the following code print? Note: the sizeof() function returns the number of bytes of the argument passed to it. #include using namespace std; int main( ) { typedef int my_2darray[1] [1]; my_2darray b[3][2]; cout<

6. What will the following code print? Note: the sizeof() function returns the number of bytes of the argument passed to it. #include using namespace std; int main( ) { typedef int my_2darray[1] [1]; my_2darray b[3][2]; 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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C++ programming task. main.cc file: #include <iostream>#include <map>#include <vector> #include "plane.h" int main() { std::vector<double> weights{3.2, 4.7, 2.1, 5.5, 9.8, 7.4, 1.6, 9.3}; std::cout << "Printing out all the weights: " << std::endl; // ======= YOUR CODE HERE ======== // 1. Using an iterator, print out all the elements in // the weights vector on one line, separated by spaces. // Hint: see the README for the for loop syntax using // an iterator, .begin(), and .end() // ========================== std::cout << std::endl; std::map<std::string, std::string> abbrevs{{"AL", "Alabama"}, {"CA", "California"}, {"GA", "Georgia"}, {"TX", "Texas"}}; std::map<std::string, double> populations{ {"CA", 39.2}, {"GA", 10.8}, {"AL", 5.1}, {"TX", 29.5}}; std::cout <<…
C+++ CODE HELP WITH POINTER BASICS CODE TO DO THE FOLLOWING: In function DisplayRank(), if rankPointer is null, print "rankPointer is null.". Otherwise, print the value in the variable pointed to by rankPointer. End with a newline. Ex: If the input is Y D, then the output is: D #include <iostream>using namespace std; void DisplayRank(char* rankPointer) { /* Your code goes here */ } int main() { char rank; char* rankPointer; char action; rank = '0'; cin >> action; cin >> rank; if (action == 'Y') { rankPointer = &rank; } else { rankPointer = nullptr; } DisplayRank(rankPointer); return 0;}
this C++ code is pre-existing and cannot be changed or modified. for it to work, the program has to use this information. #include <iostream>#include <vector>using namespace std; int main() { const int NUM_VALS = 4; vector<int> courseGrades(NUM_VALS); int i; for (i = 0; i < courseGrades.size(); ++i) { cin >> courseGrades.at(i); } //enter code here// return 0; }
#include #include using namespace std; //function prototypesint countLetters(char*); int countDigits(char*); int countWhiteSpace(char*); int main() { int numLetters, numDigits, numWhiteSpace; char inputString[51]; cout <<"Enter a string of no more than 50 characters: " << endl << endl; cin.getline(inputString,51); numLetters = countLetters(inputString); numDigits = countDigits(inputString); numWhiteSpace = countWhiteSpace(inputString); cout << "The number of letters in the entered string is " << numLetters << endl; cout << "The number of digits in the entered string is " << numDigits << endl; cout << "The number of white spaces in the entered string is " << numWhiteSpace << endl; return 0; } int countLetters(char *strPtr) { int occurs = 0; while(*strPtr != '\0') // loop is executed as long as// the pointer strPtr does not point // to the null character which// marks the end of the string // isalpha determines…
please use DEQUE #include <iostream>#include <string>#include <deque> using namespace std; const int AIRPORT_COUNT = 12;string airports[AIRPORT_COUNT] = {"DAL","ABQ","DEN","MSY","HOU","SAT","CRP","MID","OKC","OMA","MDW","TUL"}; int main(){// define stack (or queue ) herestring origin;string dest;string citypair;cout << "Loading the CONTAINER ..." << endl;// LOAD THE STACK ( or queue) HERE// Create all the possible Airport combinations that could exist from the list provided.// i.e DALABQ, DALDEN, ...., ABQDAL, ABQDEN ...// DO NOT Load SameSame - DALDAL, ABQABQ, etc .. cout << "Getting data from the CONTAINER ..." << endl;// Retrieve data from the STACK/QUEUE here } Using the attached shell program (AirportCombos.cpp), create a list of strings to process and place on a STL DEQUE container. Using the provided 3 char airport codes, create a 6 character string that is the origin & destination city pair. Create all the possible…
initial c++ file/starter code: #include <vector>#include <iostream>#include <algorithm> using namespace std; // The puzzle will always have exactly 20 columnsconst int numCols = 20; // Searches the entire puzzle, but may use helper functions to implement logicvoid searchPuzzle(const char puzzle[][numCols], const string wordBank[],vector <string> &discovered, int numRows, int numWords); // Printer function that outputs a vectorvoid printVector(const vector <string> &v);// Example of one potential helper function.// bool searchPuzzleToTheRight(const char puzzle[][numCols], const string &word,// int rowStart, int colStart) int main(){int numRows, numWords; // grab the array row dimension and amount of wordscin >> numRows >> numWords;// declare a 2D arraychar puzzle[numRows][numCols];// TODO: fill the 2D array via input// read the puzzle in from the input file using cin // create a 1D array for wodsstring wordBank[numWords];// TODO:…
C++ Program: #include <iostream>#include <string> using namespace std; const int AIRPORT_COUNT = 12;string airports[AIRPORT_COUNT] = {"DAL","ABQ","DEN","MSY","HOU","SAT","CRP","MID","OKC","OMA","MDW","LAX"}; int main(){ // define stack (or queue ) here string origin; string dest; string citypair; cout << "Loading the CONTAINER ..." << endl; // LOAD THE STACK ( or queue) HERE // Create all the possible Airport combinations that could exist from the list provided. // i.e DALABQ, DALDEN, ...., ABQDAL, ABQDEN ... // DO NOT Load SameSame - DALDAL, ABQABQ, etc .. cout << "Getting data from the CONTAINER ..." << endl;// Retrieve data from the STACK/QUEUE here } Using the attached program (AirportCombos.cpp), create a list of strings to process and place on a STL STACK container. The provided code is meant to be generic. Using the provided 3 char airport codes, create a 6 character string that is the origin &…
#include <stdio.h>#include <stdlib.h>#include <math.h>#include <string.h>#define MAX 10 void generate_matrix( int M[MAX][MAX], int rows, int cols); int main(){int matrix[MAX][MAX], temp[MAX][MAX], R, C, i , j; printf("Enter number of rows (0 to exit): ");scanf("%d", &R); if (R <= 0)return 0; printf("Enter number of columns: ");scanf("%d", &C); generate_matrix (matrix, R, C);for(j=0; j<C; j++){for(i=0; i<R; i++){printf("%d\t", matrix[i][j]);;}printf("\n");} void generate_matrix( int M[MAX][MAX],int rows, int cols){int j, i; for(j=0; j<cols; j++){for(i=0; i<rows; i++){M[j][i] = (rand() % 9);}}} The generated matrix function is supposed to generate numbers 0-9But when i test it with ROW=5, COL=7, or when ROW!=COL the generated numbers are not in between the range.CAN you fix this issue ?
#include <bits/stdc++.h> using namespace std; struct Employee { string firstName; string lastName; int numOfHours; float hourlyRate; char major[2]; float amount; Employee* next; }; void printRecord(Employee* e) { cout << left << setw(10) << e->lastName << setw(10) << e->firstName << setw(12) << e->numOfHours << setw(12) << e->hourlyRate << setw(10) << e->amount << setw(9) << e->major[0]<< setw(7) << e->major[1]<<endl; } void appendNode(Employee*& head, Employee* newNode) { if (head == nullptr) { head = newNode; } else { Employee* current = head; while (current->next != nullptr) { current = current->next; } current->next = newNode; } } void displayLinkedList(Employee* head) { Employee* current = head; if(current!=nullptr){ cout…
#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;…
Please complete the following guidelines and hints. Using C language. Please use this template: #include <stdio.h>#define MAX 100struct cg { // structure to hold x and y coordinates and massfloat x, y, mass;}masses[MAX];int readin(void){/* Write this function to read in the datainto the array massesnote that this function should return the number ofmasses read in from the file */}void computecg(int n_masses){/* Write this function to compute the C of Gand print the result */}int main(void){int number;if((number = readin()) > 0)computecg(number);return 0;}Testing your workTypical Input from keyboard:40 0 10 1 11 0 11 1 1Typical Output to screen:CoG coordinates are: x = 0.50 y = 0.50
In c++, please and thank you! Write a function that dynamically allocates an array of integers. The function should accept an integer argument indicating the number of elements to allocate. The function should return a pointer to the array.