1)
#include <iostream>
using namespace std;
main()
{int a,b, in; //in= variabila auxiliara cu care vom interschimba valorile
cin>>a>>b; //citirea celor 2 nr.
in=a; a=b; b=in;
cout<<"a="<<a<<endl;
cout<<"b="<<b<<endl;}
2)
#include <iostream>
using namespace std;
main()
{int x;
cin>>x;
cout<<"Valoarea introdusa este"<<" "<<x;}
Coroana ? :D