A pedometer treats walking 2,000 steps as walking 1 mile. Write a program whose input is the number of steps, and whose output i

public static int factorial(int n) { if (n >= 1 && n <=12) { if (n == 1) return 1; else return n * factorial(n - 1); } else return -1; } Explanation: The factorial method takes a single integer n as input. It checks if n is within the range of 1 to 12. If it is, it further checks if n equals 1. If it is indeed 1, it returns 1 as the factorial. Otherwise, it recursively calls itself with n decreased by 1, multiplying the result by n. If n is outside this range, the method returns -1 indicating the input is invalid.

Question:

The function is_positive should yield True if the supplied number is positive; otherwise, it gives None. Can you fill in the blanks accordingly?

def is_positive(number):

       if  _____ :

           return _____

Answer:

def is_positive(number):

   if (number > 0):

       return True

  else:

       return "None"

---------------------------------------------------------------------------------

Code Test and Sample Output:

print(is_positive(6))

>> True

print(is_positive(-7))

>> None

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Explanation:

This segment of code is composed in Python.

To explain it further, let's break down the content of each line;

Line 1: Creates a function identified as is_positive which takes in a variable number.i.e

def is_positive(number):

Line 2: Evaluates if the given number is positive; a number qualifies as positive if it exceeds zero. i.e

if (number > 0):

Line 3: Produces a boolean result of True when the input number is positive. i.e

return True

Line 4: Initiates the else block to be executed in case the input number isn’t positive. i.e

else:

Line 5: Returns the string "None" when the number is not positive. i.e

return "None"

When combined, this results in;

===============================

def is_positive(number):

   if (number > 0):

       return True

   else:

       return "None"

================================

An instance test for the code provided an argument of 6 and -7, resulting in True and None respectively. i.e

print(is_positive(6))   = True

print(is_positive(-7))  = None

<span>Port 80 is being blocked by the Windows Firewall.</span>

Answer:

#include <iostream>

using namespace std;

int main() {

   int i, lo=12, hi=45, result=0; // initializing the required variables..

   for(i=lo;i<=hi;i++) // implementing a for loop.

   {

       result+=i; // accumulating the sum of integers..

   }

   cout<<result<<endl; // displaying the resulting total.

return 0;

}

Output:-

969

Explanation:

This program is written in C++. Initially, the variables i, lo, hi, and result are declared, with only lo, hi, and result initialized. A for loop is employed to loop through all values from lo to hi, adding each integer to the result.

Answer:

// C++ program.

#include <bits/stdc++.h>

using namespace std;

// main function

int main() {

  // variable

float n;  

cout<<"Enter the initial value:";

//User input

cin>>n;

//Variables for measurements at 6, 12, and 18 hours

float hours_6, hours_12, hours_18;  

//Set floating-point precision

cout << fixed;

    cout << setprecision(6);

 //Calculate caffeine amounts after 6, 12, 18 hours

hours_6 = n / 2.0;

hours_12 = hours_6 / 2.0;

hours_18 = hours_12 / 2.0;

//Display results

cout<<"After 6 hours: "<<hours_6<<"mg"<<endl;

cout<<"After 12 hours: "<<hours_12<<"mg"<<endl;

cout<<"After 18 hours: "<<hours_18<<" mg"<<endl;

return 0;

}

Explanation:

The program reads input from the user and sets the output precision to six decimal places. The caffeine amount after 6 hours is half the initial input. At 12 hours, it is half the 6-hour value, and after 18 hours, it is half the 12-hour value.

Output:

Enter the initial value:100

After 6 hours: 50.000000 mg

After 12 hours: 25.000000 mg

After 18 hours: 12.500000 mg