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Java-前導&運算子

Authored by 闕河正 闕河正

Computers

1st Grade - University

Used 2+ times

Java-前導&運算子
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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

var a = 5;

/*a = a - 2;

a += 1;

*/

a *= 3;

請問上段程式執行完後變數a的值為何?

15

9

12

5

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

java每一段程式的結尾需添加什麼符號

:

>

<

;

3.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

System.out.printf(3*(2-5)-8)

請問此段程式輸出為何?

1

5

9

15

4.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

a = 80.3625

請選擇一段程式可正確的輸出80.36

System.out.printf("%.2f\n" , a);

System.out.printf("%.2d\n" , a);

System.out.printf("%2f\n" , a);

System.out.printf("%2d\n" , a);

5.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

請問下段程式的結果各為何?

A.2.0/3.0

B.2f/3f

C.2/3

A.0.6666666

B.0.6666666

C.0.6666666

A.0.6666666

B.0.6666667

C.0

A.0.6666667

B.0.6666666

C.0

A.0.6666666

B.0.6666667

C.0.6666667

6.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

int grade = 60;

String point = "成績:"

point += "grade = " + grade;

成績:grade = 60

成績 = 60

成績 = grade

grade = 60

7.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

int a = 10;

byte b = a * 13;

請問b的值為何?

130

-128

-126

127

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