System.read.in(); -problems when inputting numbers

Question

Very wet behind the ears when it comes to java and having problems in inputting numbers. My course requires me to write a program that converts degrees c to degrees f. An addition is to have the user input the value of degrees c. When I input a value, say 0, then instead of c being that value it is 49 instead (maybe ASCII?). I sense that the problem is the System.in.read(); bit. I've preceded it with (int) and also tried (char) but to no avail. The other problem is how to get the program to accept a double figure or treble figure input (i.e 20 degrees c). My program is below. Any advice would be greatly appreciated.
//This program is designed to convert degrees Celsius into degrees Fahrenheit
class Ctof
     public static void main(String[]args)
     throws java.io.IOException
          //identify variables
          int c;
          double f; //double is needed as calculation involves fractions
          System.out.println("Please input a value of degrees Celsius then press [Enter]");
          c=(int)System.in.read();
          f=(c/(5.0/9.0))+32;
          System.out.println(c + " degrees Celsius"); //prints value of c
          System.out.println("This is " + f + " degrees Fahrenheit"); //prints value of f
}

Answer 1

I think this should work...
import java.io.*;
class Ctof
static BufferedReader b;
public static void main(String[]args)
throws java.io.IOException
//identify variables
int c;
double f; //double is needed as calculation involves fractions
b = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Please input a value of degrees Celsius then press [Enter]");
c = Integer.parseInt(b.readLine());
f=(c/(5.0/9.0))+32;
System.out.println(c + " degrees Celsius"); //prints value of c
System.out.println("This is " + f + " degrees Fahrenheit"); //prints value of f
} I've added a BufferedReader to read data from the input stream (System.in). This then gets converted to an int. System.in.read() is only really for reading bytes.
Andrew