Exercises : Answer the following Question

Submitted by tushar pramanick on Thu, 03/07/2013 - 12:53

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 Questions and Exercises."

    Given an int variable x and an unsigned int variable y, as well as x = 0x8765 and y = 0x8765, is x equal to y?
    Given that the int data type is 16 bits long, what is the hex format of the decimal number -23456?
    Which format specifier, %ld or %lu, should be used to specify an unsigned long int variable?
    What is the name of the header file you have to include if you're calling some C math functions from your C program?

Exercises

Given the following statements,
    int x;
    unsigned int y;
    x = 0xAB78;
    y = 0xAB78;
write a program to display the decimal values of x and y on the screen.
   

Write a program to measure the sizes of short int, long int, and long double on your machine.
   

Give the binary representations of the following:
        512
        -1
        128
        -128

Write a program to display the decimal value given in quiz question 2 in the hex format. Does the result from the program match your answer to that question?


Given an angle of 30 degrees, write a program to calculate its sine and tangent values.
Write a program to calculate the non-negative square root of 0x19A1.

 

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Aligning Output

Aligning Output
As you might have noticed in the previous section, all output is right-justified. In other words, by default, all output is placed on the right edge of the field, as long as the field width is longer than the width of the output.

 

Adding the Minimum Field Width

Adding the Minimum Field Width

Converting to Hex Numbers

Converting to Hex Numbers

Revisiting the printf() Function

Revisiting the printf() Function

The printf() function is the first C library function you used in this book to print out messages on the screen. printf() is a very important function in C, so it's worth it to spend more time on it.

 

Another Function for Writing: putchar()

Another Function for Writing: putchar()