Write a program that converts integer Fahrenheit temperatures from 0 to 212 degrees to floating-point Celsius temperatures with 3 digits of precision. Use the formula celsius = 5.0 / 9.0 * ( fahrenheit - 32 ); to perform the calculation. The output should be printed in two right-justified columns and the Celsius temperatures should be preceded by a sign for both positive and negative values.

Question

What will be an ideal response?

Answer 1

```
#include
#include
using namespace std;

int main()
{
double celsius; // holds Celsius temperature

// create column headings with fields of length 20
cout << setw( 20 ) << "Fahrenheit " << setw( 20 ) << "Celsius\n"
<< fixed << showpoint;

// convert Fahrenheit to Celsius and display temperatures
// showing the sign for Celsius temperatures
for ( int fahrenheit = 0; fahrenheit <= 212; fahrenheit++ )
{
celsius = 5.0 / 9.0 * ( fahrenheit - 32 );
cout << setw( 15 ) << noshowpos << fahrenheit << setw( 23 )
<< setprecision( 3 ) << showpos << celsius << '\n';
} // end for
} // end main
```
Fahrenheit Celsius
0 -17.778
1 -17.222
2 -16.667
3 -16.111
4 -15.556
...
205 +96.111
206 +96.667
207 +97.222
208 +97.778
209 +98.333
210 +98.889
211 +99.444
212 +100.000