The three main operating systems today are Windows, Mac OS, and ____________________.
Fill in the blank(s) with the appropriate word(s).
Linux
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When a(n) ____ statement is performed within a switch statement or a loop statement, execution proceeds immediately to the first statement after the switch or loop statement.
A. continue B. exit C. break D. assert
Which of the following statements is false?
a. Assigning an object to a variable binds (associates) that variable’s name to the object. You can then use the variable in your code to access the object’s value. b. After the following snippet’s assignment, the variable x refers to the integer object containing 7. x = 7 c. The following statement changes x’s value: x + 10 d. The following statement changes x’s value: x = x + 10
When an MVS partition becomes available, the __________ reads the next job step from a queue and loads it into memory.
a. initiator/terminator b. master scheduler c. job control program d. job entry subsystem
Suppose we want to write a stopwatch application that has a GUI. As a start, we will write stubs that create buttons for the application. These buttons will simply indicate which one was pressed, but will not cause any other actions. Create a GUI application that has a single window, three buttons—Start, Stop, and Reset—and one label. When Start is pressed, change the foreground color of the label to green and its text to Start was pressed. When Stop is pressed, change the foreground color of the label to red and its text to Stop was pressed. When Reset is pressed, change the foreground color of the label to orange and its text to Reset was pressed.
What will be an ideal response?