C :

#include<stdio.h>   

int main(){  
	int n;
	scanf("%d",&n);
	
	int b = n / 100;
	int s = n / 10 % 10;
	int g = n % 10;
	
	
	int c = g * 100 + s * 10 + b;
	printf("%d",c);

	return 0; 
} 

C++ :

#include <iostream>
using namespace std;
int main(){
	int n,a,b,c,x;
	cin>>n;
	a=n/100;
	b=n/10%10;
	c=n%10;
	x=c*100+b*10+a*1;
	cout<<x<<endl;
}

Pascal :

var n,g,s,b:longint;
begin
  read(n);
  g:=n mod 10;
  s:=n div 10 mod 10;
  b:=n div 100;
  writeln(g*100+s*10+b);
end.

Java :

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
			Scanner scanner=new Scanner(System.in);
			int m=scanner.nextInt();
			int a=m%1000/100;
			int b=m%100/10;
			int c=m%10;
			int d=a+b*10+c*100;
		System.out.print(d);  
			
	}
}

Python :

n=int(input())
a=n//100
b=n//10%10
c=n%10
S=c*100+b*10+a
print(S)