A.y=y*100+0.5/100.0; B.y=(y*100+0.5)/100.0; C.y=(y/100+0.5)*100.0; D.y=(int)(y*100+0.5)/100.0;
A.4 B.16 C.32 D.52
A.0<=y<100 B.i=j==0 C.(char)(65+3) D.y+1=y+1