Question

Use functions to complete this C + + program

You want to write a converter program which will let user convert distance and weight from SI to the USCS system and vice versa The formulae are as follows: 1. Distance in miles- distance in kilometers x 1.60 2. Weight in kilograms weight in pounds x 2.20 The program would let user input the number that they want to convert and then choose the units to and from which they want to convert. The program should run as long as the user wants to keep on converting. Now, modify the program from Part D to make sure that if user enters invalid input, the program shows an error message and asks for the user to correct input

Answer 1

#include <iostream>
#include <stdio.h>

using namespace std;
int main ()
{
double weight, distance;
int option, error;
cout << "Enter Weight and Distance \t";
//Input validation
do
{
error = 0;
cin >> weight >> distance;
if (cin.fail ())
   {
   cout << "Please enter a valid value" << endl;
   error = 1;
   cin.clear ();
   cin.ignore (80, '\n');
   }
}
while (error == 1);

//Conversion code
do
{
cout <<
   "select option to convert 1 for SI t0 USCS 2 for UCSC to SI and 0 to quit \n";
cin >> option;
if (option == 1)
   {
   distance = distance / 1.6;
   weight = weight * 2.2;
   cout << "converted weight and distance : weight = " << weight <<
   "pounds" << "\t distance = " << distance << "miles" << "\n";
   }
else if (option == 2)
   {
   distance = distance * 1.6;
   weight = weight / 2.2;
   cout << "converted weight and distance : weight = " << weight <<
   "kilograms" << "\t distance = " << distance << "kilometerss" <<
   "\n";

   }

} while (option != 0);

return 0;
}