Exercises : Answer the following Question

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To help solidify your understanding of this hour's lesson, you are encouraged to answer the quiz questions and finish the exercises provided in the Workshop before you move to the next lesson. The answers and hints to the questions and exercises are given in Appendix E, "Answers to Quiz Questions and Exercises."
Quiz

    What are the values represented by the following enum names?

    enum months { Jan, Feb, Mar, Apr,
                  May, Jun, Jul, Aug,
                  Sep, Oct, Nov, Dec };

    What are the values represented by the following enum names?

    enum tag { name1,
               name2 = 10,
               name3,
               name4 };

    Which statements in the following are equivalent in the variable declaration?
        typedef long int BYTE32; BYTE32 x, y, z;
        typedef char *STRING[16]; STRING str1, str2, str3;
        long int x, y, z;
        char *str1[16], *str2[16], *str3[16];
    Can you pass some command-line arguments to a main() function that has the following definition?

    int main(void)
    {
       . . .
    }

Exercises

    Write a program to print out the values represented by the enumerated names declared in Quiz question 2.
    Given the following declarations:

    typedef char WORD;
    typedef int SHORT;
    typedef long LONG;
    typedef float FLOAT;
    typedef double DFLOAT;

    write a program to measure the sizes of the synonyms to the data types.

    Rewrite the program in Listing 18.4. This time, add integers starting at the value of MIN_NUM instead of the value of MAX_NUM.
    Write a program that accepts command-line arguments. If the number of command-line arguments, not including the name of the executable itself, is less than two, print out the usage format of the program and ask the user to reenter the command-line arguments. Otherwise, display all command-line arguments entered by the user.

Related Items

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In previous hours, you learned that computer data and files are made of bits (or bytes). There is even an operator in C_the sizeof operator_that can be used to measure the number of bytes for data types.

Everything Is Logical

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Now, it's time for you to learn about a new set of operators: logical operators.

There are three logical operators in the C language:
&&     The logical AND operator
||     The logical OR operator

Question and Answer

    Q Why do we need the sizeof operator?

Exercises : Answer the following Question

To help solidify your understanding of this hour's lesson, you are encouraged to answer the quiz questions and finish the exercises provided in the Workshop before you move to the next lesson.

Playing with an Infinite Loop

Playing with an Infinite Loop

If you have a for statement like this,

for ( ; ; ){
  /* statement block */
}