C :

#include<stdio.h>
int main()
{
int a[7],b;
for(b=1;b<=3;b++)
{
scanf("%d",&a[b]);
}
  a[4]=a[1];a[5]=a[2];
  a[1]=a[3];a[2]=a[4];a[3]=a[5];
  printf("%d\n%d\n%d",a[1],a[2],a[3]);
}

C++ :

#include<iostream>
using namespace std;
int main()
{
	int a,b,c,s;
	cin>>a>>b>>c;
	cout<<c<<endl;
	cout<<a<<endl;
	cout<<b<<endl;
	return 0;
}

Pascal :

program xx;
var t,a,b,c:integer;
begin
readln(a);
readln(b);
readln(c);
t:=a;
a:=c;
c:=b;
b:=t;
writeln(a);
writeln(b);
writeln(c)
end.