Question

Write a program that will convert miles to kilometers and kilometers to miles. The user will indicate both a number (representing a distance) and a choice of whether that number is in miles to be converted to kilometers or kilometers to be converted to miles Each conversion is done with a value returning function You may use the following conversions. 1 kilometer = .621 miles 1 mile = 1.61 kilometers Sample Run: Please input Convert miles to kilometers Convert kilometers to miles Quit Please input the miles to be converted 120 120 miles = 193 2 kilometers Please input Convert miles to kilometers Convert kilometers to miles Please input the kilometers to be converted 235 kilometers = 145.935 miles Please input Convert miles to kilometers Convert kilometers to miles

Answer 1

#include <iostream>
#include <iomanip>
using namespace std;

//Function declaration
double milesToKilometers(double miles);
double kilometersToMIles(double kms);

//This function will convert miles to kilometers
double milesToKilometers(double miles)
{
   //calculating the no of miles and returning it
   return miles*1.61;  
}

//This function will convert kilometers to miles
double kilometersToMIles(double kms)
{
   //calculating the no of kilometers and returning it
   return kms*0.621;
}
int main()
{
   //Declaring variables
   int choice;
double miles,kilometers;

//This loop continues to execute until user enters '3'
do
{
//Displaying menu
cout<<"\n\nPlease Input"<<endl;
cout<<"\t1.Convert Miles to Kilometers"<<endl;
cout<<"\t2.Convert Kilometers to Miles"<<endl;
cout<<"\t3.Quit\n"<<endl;

//Getting the user choice entered by the user
cin>>choice;
switch(choice)
{
   /* If the user selected choice 1
   * then this case 1 will get executed
   */
   case 1:
       {
           //Getting the miles entered by the user
       cout<<"Please input Miles to be converted :";
       cin>>miles;
         
       //calling the function milesToKilometers by passing miles as input
cout<<miles<<" Miles= "<<std::fixed<< std::setprecision(2)<<milesToKilometers(miles)<<" Kilometers.";
break;
       }
       case 2:
       {
           //Getting the kilometers entered by the user
cout<<"Please input Kilometers to be converted :";
       cin>>kilometers;
         
          //calling the function kilometersToMiles by passing kilometers as input
cout<<kilometers<<" Kilometers= "<<std::fixed<< std::setprecision(2)<<kilometersToMIles(kilometers)<<" Miles.";          
           break;
       }
      
}
}while(choice!=3);
     
return 0;
}

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Output: