Question

d. Assumecalories is already declared as an integer.  Code a fall-through switchstatement by dividing calories by 100 in the controlling expression of the switch header, so the following messages print:

When caloriesare 1200 through 1800:  “Diet is on target.”

When caloriesare 2000 through 2550:  “Calorie intake ok if active.”

When caloriesare any other value:  “Calorie intake is either insufficient or too much!”

e. Re-code 1d using double-selection ifs.  You’ll use a conditional logical operator to join the sets of relational conditions (choose the right one).  

f. Code a forloop with the switch structure from 1d and allow 3 attempts.  Prompt the user to enter calories.  When the number entered is in the correct range exit the loop (not the program) after one of the messages in 1d is printed.  Print the message “No more attempts left!” when it is the last attempt.

g. Re-code the following as a do-whileloop with a switchstatement.  Assume cruiseis declared and has been set to true, so it can enter the loop.  Assume choice and destinationare already declare

while(cruise)

{

            System.out.printf(“%nChoose a number from 1 through 4 to find out “

+ “which cruise you have won:  “);

            choice = input.nextInt();

            if(choice == 1)

            {

                        destination = “Bahamas”;                                                    

            }

            else

            {          if(choice == 2)

                        {

                                    destination = “British Isles”;                                                                        

                        }

                        else

                        {          if(choice == 3)

                                    {

                                                destination = “Far East”;                  

}

else

                        {          if(choice == 4)

{

                                                destination = “Amazon River”;

}

else

{          

System.out.printf(“%nInvalid choice!  Enter “

+ “5 to continue or 0 to exit:  ”);

                                                                        choice = input.nextInt();

                                    

                                                }//END if choice = 4 else NOT = 4

                                    }//END if choice = 3 else NOT = 3

                        }//END if choice = 2 else NOT = 2

            }//END if choice = 1 else NOT = 1  

            if(choice >= 0 && choice < 5)

            {

                        cruise = false;

            }//END if choice from 1-4

}//END while cruise is true

System.out.printf(“%nYou have won a cruise to the %s!”, destination);

Answer 1

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ANSWER:

A)

#include<iostream>
#include <cmath>
using namespace std;
int main(){
   int calories;
   //requesting calories from user
   cout<<"Enter calories: ";
   cin>>calories;
  
   //as the switch statement only accepts integer
   //make the values from 2551 to 2599 more than 2600
   if(calories>2550 && calories<2600)
       calories+=50;
  
   //switch statement with calaries/100 as header
   switch(calories/100){
       case 12 ... 18: cout<<"Diet is on target\n";
                       break;
                      
       case 20 ... 25: cout<<"Calorie intake ok if active\n";
                       break;
                      
       default: cout<<"Calorie intake is either insufficient or too much\n";
                       break;  
   }
   return 0;
}

PGM END

B)

//############################ PGM START ##########################################

#include<iostream>
using namespace std;

int main(){
   int calories;
   //requesting calories from user
   cout<<"Enter calories: ";
   cin>>calories;
   //using if else statement to compare and print results
   if(calories>=1200 && calories<=1800){
       cout<<"Diet is on target\n";
   }else{
       if(calories>=2000 && calories<=2550){
           cout<<"Calorie intake ok if active\n";
       }else{
           cout<<"Calorie intake is either insufficient or too much\n";
       }
   }
  
   return 0;
}