单项选择题
A.equals(t); B.equals(c); C.s = =t D.t = = c;
A.详细设计 B.软件编码 C.软件测试 D.软件维护
A.-128~+127 B.-32768~ +32767 C.-2147483648~ +2417483647 D.-3.40282347E38 ~ +3.40282347E38