Sams Teach Yourself C++ in 21 Days

Answers 825

D

7. a. Good
   b. Not legal
   c. Legal, but a bad choice
   d. Good
   e. Legal, but a bad choice

Exercises ........................................................................................................

1. The following are appropriate answers for each:
   a. unsigned short int
   b. unsigned long intor unsigned float
   c. unsigned double
   d.unsigned short int


2. The following are possible answers:
   a. myAge
   b. backYardArea
   c. StarsInGalaxy
   d.averageRainFall


3. The following is a declaration for pi:
   const float PI = 3.14159;


4. The following declares and initializes the variable:
   float myPi = PI;

Day 4....................................................................................................................

Quiz ................................................................................................................

1. An expression is any statement that returns a value.


2. Yes, x = 5 + 7 is an expression with a value of 12.


3. The value of 201 / 4 is 50.


4. The value of 201 % 4 is 1.


5. Their values are myAge: 41,a: 39,b: 41.


6. The value of 8+2*3 is 14.
   7.if(x = 3)assigns 3 to xand returns the value 3 , which is interpreted as true.
   if(x == 3)tests whether xis equal to 3 ; it returns true if the value of xis equal to
   3 and false if it is not.

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