// Code derived from Stroustrup's PPP2 book// § 3.6 Composite assignment operators// -beginning on p 73#include<iostream>usingstd::cout;intmain(){intcounter=1;++counter;cout<<counter<<'\n';counter=counter+1;cout<<counter<<'\n';inta=1;a+=7;// means a = a+7cout<<a<<'\n';intb=1;b-=9;// means b = b-9cout<<b<<'\n';intc=1;c*=2;// means c = c*2cout<<c<<'\n';}