Review Questions

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Review Questions

1. Which data type would you use for each of the following kinds of data?

   1. The population of Rio Frito.

   2. The average weight of a Rembrandt painting.

   3. The most common letter in this chapter.

   4. The number of times that the letter occurs in this chapter.

2. Why would you use a type long variable instead of type int ?

3. Identify the type and meaning, if any, of each of the following constants:

   1. '\b'

   2. 1066

   3. 99.44

   4. 0XAA

   5. 2.0e30

4. Virgila Ann Xenopod has concocted an error-laden program. Help her find the mistakes.

    include <stdio.h> main (  float g; h;  float tax, rate;  g = e21;  tax = rate*g; ) 

5. Identify the data type (as used in declaration statements) and the printf() format specifier for each of the following constants:

   Constant	Type	Specifier
   a. 12
   b. 0X3
   c. `C'
   d. 2.34E07
   e. `\040 '
   f. 7.0
   g. 6L
   h. 6.0f

6. Identify the data type (as used in declaration statements) and the printf() format specifier for each of the following constants (assume a 16-bit int ):

   Constant	Type	Specifier
   a. 012
   b. 2.9e05L
   c. `s'
   d. 100000
   e. `\n'
   f. 20.0f
   g. 0x44

7. Suppose a program begins with these declarations:

    int imate = 2; long shot = 53456; char grade = `A'; float log = 2.71828; 

   Fill in the proper type specifiers in the following printf() statements:

    printf("The odds against the %__ were %__ to 1.\n", imate, shot); printf("A score of %__ is not an %__ grade.\n", log, grade); 

8. Suppose that ch is a type char variable. Show how to assign the carriage -return character to ch by using an escape sequence, a decimal value, an octal character constant, and a hex character constant. (Assume ASCII code values.)

9. Correct this silly program. (The / in C means division.)

    void main(int) / this program is perfect / {  cows, legs integer;  printf("How many cow legs did you count?\n);  scanf("%c", legs);  cows = legs / 4;  printf("That implies there are %f cows.\n", cows) } 

10. Identify what each of the following escape sequences represents:

    1. \n

    2. \\

    3. \"

    4. \t

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