单项选择题
A. BY B. BT C. YT D. YE
A. int i=100; B. for(::); while(1) i=i%100+1: if(i>100)break; C. int k=10000; dok++;while(k>10000); D. int s=36: while(s)--s;
A. kk>='A'&&kk<='Z' B. !(kk>='A'||kk<='Z') C. (kk+32)>='a'&&(kk+32)<='z' D. isalpha(kk)&&(kk<91)