單項選擇題

Given that the current directory is empty, and that the user has read and write permissions, and the following:

Which statement is true?（）

A.Compilation fails.
B.The file system has a new empty directory named dir.
C.The file system has a new empty directory named newDir.
D.The file system has a directory named dir, containing a file f1.txt.
E.The file system has a directory named newDir, containing a file f1.txt.

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單項選擇題

Given:

Which code fragment, inserted at line 24, outputs "123abc 123abc"?（）

A.sb1.append("abc"); s1.append("abc");
B.sb1.append("abc"); s1.concat("abc");
C.sb1.concat("abc"); s1.append("abc");
D.sb1.concat("abc"); s1.concat("abc");
E.sb1.append("abc"); s1 = s1.concat("abc");
F.sb1.concat("abc"); s1 = s1.concat("abc");
G.sb1.append("abc"); s1 = s1 + s1.concat("abc");
H.sb1.concat("abc"); s1 = s1 + s1.concat("abc");

單項選擇題

Given:

What is the result?（）

A.2
B.3
C.4
D.6
E.7
F.Compilation fails.

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Given that the current directory is empty, and that the user has read and write permissions, and the following: Which statement is true?（）

你可能感興趣的試題

Given: Which code fragment, inserted at line 24, outputs "123abc 123abc"?（）

Given: What is the result?（）

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Given that the current directory is empty, and that the user has read and write permissions, and the following:

Which statement is true?（）

Given:

Which code fragment, inserted at line 24, outputs "123abc 123abc"?（）

Given:

What is the result?（）