Match each function with its possible output.
2 answers:
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Answer:
Given that: Design scenario - page 197 has a continuation of the chapter 1 design scenario for ElectroMyCycle
Explanation:
See attached image
Answer:
<em>import java.util.Scanner;</em>
<em>public class TestClass {</em>
<em> public static void main(String[] args) {</em>
<em> Scanner input = new Scanner(System.in);</em>
<em> System.out.println("Enter value for x1, x2, y1, y2");</em>
<em> double x1 = input.nextDouble();</em>
<em> double x2 = input.nextDouble();</em>
<em> double y1 = input.nextDouble();</em>
<em> double y2 = input.nextDouble();</em>
<em> double xVal = Math.pow((x2-x1),2);</em>
<em> double yVal = Math.pow((y2-y1),2);</em>
<em> double distance = Math.sqrt(xVal+yVal);</em>
<em> System.out.println(distance);</em>
<em> }</em>
<em>}</em>
Explanation:
The code is written in Java Programming Language.
This code simply implements the formula for the distance between two points given as
distance =
The scanner class is used to prompt and receive all the variables that are declared.
Note that we used two special Java methods (Math.pow and Math.sqrt)
Answer:
1st question:
Use the variables k, d, and s so that they can read three different values from standard input an integer, a float, and a string respectively. On one line, print these variables in reverse order with exactly one space in between each. On a second line, print them in the original order with one space in between them.
Solution:
In Python:
k = input() #prompts user to input value of k i.e. integer value
d = input() #prompts user to input value of d i.e. float value
s = input() #prompts user to input value of s i.e. a string
print (s, d, k) #displays these variable values in reverse order
print (k, d, s)#displays these variable values in original order
In C++:
#include <iostream> // to use input output functions
using namespace std; //to identify objects like cin cout
int main() { //start of main function
int k; //declare int type variable to store an integer value
float d; // declare float type variable to store a float value
string s; // declare string type variable to store an integer value
cin >> k >> d >> s; //reads the value of k, d and s
cout << s << " " << d << " " << k << endl; //displays these variables values in reverse order
cout << k << " " << d << " " << s << endl; } // displays these variable values in original order
Explanation:
2nd question:
You would like the user of a program to enter a customer’s last name. Write a statement that asks user "Last Name:" and assigns input to a string variable called last_name.
Solution:
In Python:
last_name = input("Last Name:")
# input function is used to accept input from user and assign the input value to last_name variable
In C++:
string last_name; //declares a string type variable named last_name
cout<<"Last Name: "; // prompts user to enter last name by displaying this message Last Name:
cin>>last_name; // reads and assigns the input value to string variable last_name
The programs alongwith their outputs are attached.
