C :

#include<stdio.h>
int main(){
double F,c;
scanf("%lf",&F);
c=5*(F-32)/9;
printf("%.2lf\n",c);
return 0;
}

C++ :

#include <stdio.h>
#include <math.h>
#define PI 3.14159265358
int main() {
	float F, c;
	scanf("%f", &F);
	c = 5.0 / 9.0 * (F - 32);
	printf("%.2f\n", c);
	return 0;
}

Pascal :

program t;
var a:real;
begin
 read(a);
 writeln(5/9*(a-32):0:2);
end.                  

Java :

import java.util.*;
public class Main {
	public static void main(String args[]) {
		Scanner cin=new Scanner(System.in);
		double f=cin.nextDouble();
		double r=(f-32)*(5.0/9.0);
		System.out.printf("%.2f", r);
	}
}

Python :

print "%.2f" %(5*(input()-32)/9)