1. ## Why aren't my answers having decimal places

Hi all,

I am doing the Temperture Converter problem on this site: Temperature Converter Programming Challenge - Cprogramming.com

I basically did a quick program and used the example numbers giving on the above site (10 for low, 20 high, 4 for the step). I am getting the "right answers" but they are intergers and have no decimal places but 2 of the answers should have decimal places. I declared the varibles with double and tried with float but I am getting the same answer. When I input (10.2 for low, 20 for high, 4 for step) all the answers come out with a .2 at the end so I know it can print decimal places.

Am I missing something here? like do I have to declare how many decimal places somewhere?

Here is my program below.

Code:
```#include <cstdlib>
#include <iostream>

using namespace std;

void Celsius_to_Fahrenheit(double celsius_low, double celsius_high, int step);

int main()
{
double low_limit, high_limit;
int increments;
char exit;

cout<<"Enter low Celcius  ";
cin>>low_limit;
cout<<"\nEnter high Celcius   ";
cin>>high_limit;
cout<<"\nEnter the ingrements you would like it to calculate by  ";
cin>>increments;

cout<<"\n\nCelsius          Fahrenheit\n";
cout<<"_______          __________\n";

Celsius_to_Fahrenheit(low_limit, high_limit, increments);

cout<<"Press any key then enter to exit";
cin>>exit;
return 0;
}

void Celsius_to_Fahrenheit(double celsius_low, double celsius_high, int step)
{

double Fahrenheit;

while(celsius_high >= celsius_low)
{
Fahrenheit = 9/5 * (celsius_low + 32);

cout<<celsius_low<<"                "<<Fahrenheit<<"\n";

celsius_low = celsius_low + step;

}

}```

2. Code:
`Fahrenheit = 9/5 * (celsius_low + 32);`
Your problem is the red part in this line..
You'd think 9/5 would be 1.8, but because you are using integers the decimal part gets thrown away and the line above becomes equal to
Code:
`Fahrenheit = 1 * (celsius_low + 32);`
You could use 9.0/5.0 instead, or just 1.8

Edit:
Btw, you are using the wrong formula for the conversion
Remove the ( ) and with the above fix it should give you the correct answers.

3. Thanks!!! It worked!!

4. This is a bit off-topic, but I had the exact same problem while trying to complete the same exercise.

5. definitely off-topic.