针对下面的程序段，对于（MaxNum，Type)的取值，至少需要______个测试用例才能够满足判定覆盖的要求。

● 针对以下 C 语言程序段，对于(MaxNum，Type)的取值，至少需要（62）个测试用例能够满足判定覆盖的要求。

while (MaxNum-- ＞ 0 )

{

if (10 == Type )

x = y * 2;

else

if (100 == Type )

x = y + 10;

else

x = y - 20;

}

（62）A．5 B． 4 C． 3 D． 2

A.maxNum=x if x＞y else y

B.maxNum=math.max(x,y)

C.if(x＞y): maxNum=xelse: maxNum=y

D.if(y＞=x): maxNum=ymaxNum=x

A.5

B.4

C.3

D.2

A.maxNum=x If x＞y else y

B.maxNum=math.max(x,y)

C.if (x＞y): maxNum=x else : maxNum=y

D.if (y＞=x): maxNum=y maxNum=X

下面的哪些程序段可能导致错误？ () Ⅰ: String s = "Gone with the wind"; String t = "good "; String k = s + t; Ⅱ: String s = "Gone with the wind"; String t; t = s[3] + "one"; Ⅲ: String s = "Gone with the wind"; String standard = s.toUpperCase(); Ⅳ: String s = "home directory"; String t = s-"directory":

A．Ⅱ、Ⅲ

B．Ⅱ、Ⅳ

C．Ⅰ、Ⅳ

D．Ⅲ、Ⅳ

● 针对程序段：IF（A||B||C ）THEN W=W/X，对于(A,B,C)的取值，（57）测试用例能够满足MCDC（修正条件逻辑判定）的要求。

（57）

A．(F,T,T) (T,F,T) (T,F,F) (T,T,F)

B．(T,F,F) (T,T,F) (F,T,T) (F,F,F)

C．(T,F,F) (T,T,F) (F,T,T) (F,F,T)

D．(T,F,F) (F,T,F) (F,F,T) (F,F,F)

● 针对程序段：IF（A||B||C ）THEN W=W/X，对于(A,B,C)的取值，（57）测试用例能够满足MCDC（修正条件逻辑判定）的要求。

（57）

A．(F,T,T) (T,F,T) (T,F,F) (T,T,F)

B．(T,F,F) (T,T,F) (F,T,T) (F,F,F)

C．(T,F,F) (T,T,F) (F,T,T) (F,F,T)

D．(T,F,F) (F,T,F) (F,F,T) (F,F,F)

下面的哪些程序段可能导致错误？ () Ⅰ：String s="Gone with the wind"; String t="good"; String k=s+t; Ⅱ：String s="Gone with the wind"; String t; t=s[3]+"one"; Ⅲ：String s="Gone with the wind"; String standard=s.toUpperCase(); Ⅳ：String s="home directory"; String t=s-"directory";

A．Ⅱ、Ⅲ

B．Ⅱ、Ⅳ

C．Ⅰ、Ⅳ

D．Ⅲ、Ⅳ

A.(F,T,T)(T,F,T)(T,F,F)(T,T,F)

B.(T,F,F)(T,T,F)(F,T,T)(F,F,F)

C.(T,F,F)(T,T,F)(F,T,T)(F,F,T)

D.(T,F,F)(F,T,F)(F,F,T)(F,F,F)