}
return res; }
binary operator -( binary n2) {
unsigned borrow=0; int value;
binary res=\
for(int i=15; i>=0; i--) {
value=(bits[i]=='0'?0:1)-(n2.bits[i]=='0'?0:1)+borrow; res.bits[i]=(value==-1||value==1?'1':'0');
borrow=(value==-1||borrow!=0&&(value==0||value==1)?1:0); }
return res; } 2.
friend binary operator~(binary n2) {
int a=~int(n2); binary res(a); return res; }
friend binary operator&(binary n1,binary n2) {
int a=int(n2)&int(n1); binary res(a); return res; }
friend binary operator|(binary n1,binary n2) {
int a=int(n2)|int(n1); binary res(a); return res; }
