typedef

#include <iostream>
#include <stdlib.h>

using namespace std;

//typedef short for type-definition.

typedef unsigned short int short_int

int main()
{

     short_int a = "Hello World!"; //unsigned short int = short_int
     short_int b = "Hello World!";
     short_int c = "Hello World!";
     short_int d = "Hello World!";

    return 0;
}