Write a loop that reads c-strings from standard input where the c-string is either "land", "air", or "water". The loop terminate
s when "xxxxx" (five x characters ) is read in. Other strings are ignored. After the loop, your code should print out 3 lines: the first consisting of the string "land:" followed by the number of "land" strings read in, the second consisting of the string "air:" followed by the number of "air" strings read in, and the third consisting of the string "water:" followed by the number of "water" strings read in. Each of these should be printed on a separate line. Assume that the maximum length of a string is 8.
1 answer:
Answer:
I am writing a C++ code.
#include <iostream> // for input output functions
using namespace std; // identifies objects like cin cout
int main() { //start of main() function body
string c_string; // stores the string entered by user from land water or air
int land=0; // contains the number of times land string is read in
int air=0; //contains the number of times air string is read in
int water = 0; //contains the number of times water string is read in
cin>>c_string; //reads the string entered by user from air water or land
/*while loop continues to execute until user enters xxxxx or maximum length of a string exceeds 8 */
while(c_string!= "xxxxx" && c_string.length()<=8) {
if(c_string=="land"){ // if string entered by user is land
land = land + 1;} //counts and increments each occurrence of land string by 1
else if(c_string=="air"){// if string entered by user is air
air = air + 1;}// counts and increments each occurrence of string air by 1
else if(c_string=="water"){// if string entered by user is water
water = water + 1;}//counts and increments each occurrence of air by 1
cin>>c_string;}
/* keeps reading the string entered by user from land air or water, until the loop breaks after the user enters xxxxx or user enters a string whose length is greater than 8 */
//prints the number of times land, air and water are read in
cout << "land:"<<land;
cout << endl<<"air:"<<air;
cout << endl<< "water:"<<water; }
Explanation:
Everything is well explained in the comments above.
The program prompts the user to input strings. These strings are either land air or water. The while loop continues to read the input strings until user enters xxxxx or the string entered by user exceeds the length 8. Both these terminating conditions are added in the while loop. After the loop terminates, the number of times land, air and water strings are read is displayed on the output screen. Any other string entered by user other than these 3 is ignored. The program along with the output is attached.
You might be interested in
Answer:
Here is the Circle class:
public class Circle { // class definition
private int radius; // private data member of type int of class Circle named radius that stores the value of radius
public Circle(int r) { // parameterized constructor of class Circle that takes radius as argument
radius = r; } // sets value of radius as r
public int getRadius() { // accessor method to get the value of radius
return radius; } // returns the current value of radius
public int Diameter() { // method to compute diameter of a circle
return radius * 2; } // multiply radius value by 2 to compute diameter of Circle
public double Area() { // method to compute area of a circle
return Math.PI * Math.pow(radius, 2); } //the formula of area is
π x radius² where value of π is get using Math.PI
public double Circumference() { // // method to compute circumference of a circle
return 2* Math.PI * radius; } } //the formula of circumference is
2 x π x radius where value of π is get using Math.PI
Explanation:
Here is the Main class:
import java.util.Scanner; //to accept input from user
public class Main { //definition of Main class
public static void main(String[] args) { //start of main method
Scanner scanner = new Scanner (System.in); //creates Scanner object to take input from user
System.out.println("Enter radius: "); //prompts user to enter radius
int r = scanner.nextInt(); //reads the value of radius from user
Circle c = new Circle(r); // calls Constructor of Circle passing r as argument to it using the object c of class Circle
if(c.getRadius()<=0){ //calls getRadius method to get current value of radius using objec and checks if this value (input value of r ) is less than or equal to 0
System.out.println("Error!"); } //when above if condition evaluates to true then print this Error! message
else { //if the value of radius is greater than 0
System.out.println("the radius of this Circle is: " +c.getRadius()); //calls getRadius method to return current value of r (input value by user)
System.out.println("the diameter of this Circle is: " + c.Diameter()); //calls Diameter method to compute the diameter of Circle and display the result on output screen
System.out.printf("the circumference of this Circle is: %.2f", c.Circumference()); //calls Circumference method to compute the Circumference of Circle and display the result on output screen
System.out.println(); //prints a line
System.out.printf("the Area of this Circle is: %.2f", c.Area()); } } }
//calls Area method to compute the Area of Circle and display the result on output screen
The program and its output is attached.
