Answer:
An unsolvable problem is one for which no algorithm can ever be written to find the solution. An undecidable problem is one for which no algorithm can ever be written that will always give a correct true/false decision for every input value.
Explanation:
i hope this help you have a bless day :)
Answer:
// here is code in java.
import java.util.*;
// class definition
class Main
{
// method that return the digits of number
public static void dig(int num)
{
// while loop
while(num>0)
{
// print the digits
System.out.println(num%10);
num=num/10;
}
}
//driver method
public static void main (String[] args) throws java.lang.Exception
{
try{
// scanner object to read input string
Scanner s=new Scanner(System.in);
// variable
int num;
System.out.print("please enter the number: ");
//read the number
num=s.nextInt();
// validate the input, read a positive number only
while(num<=0)
{
System.out.print("enter a positive number only:");
num=s.nextInt();
}
System.out.println("digit of number are:");
// call the function
dig(num);
}catch(Exception ex){
return;}
}
}
Explanation:
Read a number from user and assign it to variable "num".Check if it is positive or not.If input is negative then ask user to again enter a positive number till user enter a positive number.Then call the function with input number. In this method it will find the digits of the number in the while loop using modulus "%" operator.
Output:
please enter the number: -345
enter a positive number only:1234
digit of number are:
4
3
2
1
Answer:
She needs to make time for offline and online activites.
Explanation:
The reason is because if you spend too much time online, you may have anxiety and depression. On the other hand, if you stay offline too much then, you will have trouble focusing on your hobbies, work, etc.
Advanced technology extended
Answer:
/Question.h
#include<iostream>
#include<string>
using namespace std;
class Question
{
private:
string question;
string answer[4];
unsigned int correctAnswer;
public:
Question(string ques,string *ans,unsigned int x)
{
int i;
question.assign(ques);
for(i=0;i<4;i++)
{
answer[i]=ans[i];
}
correctAnswer=x;
}
~Question()
{
}
string getQuestion()
{
return question;
}
unsigned int getCorrectAnswer()
{
return correctAnswer;
}
string getAnswer1()
{
return answer[0];
}string getAnswer2()
{
return answer[1];
}
string getAnswer3()
{
return answer[2];
}string getAnswer4()
{
return answer[3];
}
int getNoOfPossibleAnswers()
{
return 4;
}
};
Explanation:
The Question class represents one question and the possible answers for that question.
The Question class contains the question text and the 4 possible answers. It also contains the answer number of the correct answer.
The answer number is an unsigned int in the range of 1 to 4.Your Question class needs to have one or more constructors and one destructor.
It needs a member function that returns the question text. It also needs member functions that return the answer text for a specific answer
(1 through 4). The class also needs a member function that returns the number of possible answers for this question. While this is 4 today,
it could change in future versions of the class. Finally there needs to be a member function that returns the answer number of the correct answer
(a value of 1 through 4).Do not make the data members public. You can have public and private member functions as needed.