Exercise: Control Instructions

Questions for: Control Instructions

By default, the data type of a constant without a decimal point is int, whereas the one with a decimal point is a double.
A:
Yes
B:
No
C:
D:
Answer: A

6 is int constant.
6.68 is double.
6.68L is long double constant.
6.68f is float constant.

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We want to test whether a value lies in the range 2 to 4 or 5 to 7. Can we do this using a switch?
A:
Yes
B:
No
C:
D:
Answer: A
We can do this in following switch statement 

switch(a)
{
    case 2:
    case 3:
    case 4:
       /* some statements */
       break;
    case 5:
    case 6:
    case 7:
       /* some statements */
       break;
}
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Can we use a switch statement to switch on strings?
A:
Yes
B:
No
C:
D:
Answer: B
The cases in a switch must either have integer constants or constant expressions.
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The way the break is used to take control out of switch and continue to take control of the beginning of the switch?
A:
Yes
B:
No
C:
D:
Answer: B
continue can work only with loops and not with switch
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A char variable can store either an ASCII character or a Unicode character.
A:
True
B:
False
C:
D:
Answer: A

Yes, we can store either an ASCII character or a Unicode character in a char variable.

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