Exercises : Answer the following Question

Submitted by tushar pramanick on Tue, 03/05/2013 - 20:49

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.

    What do the (x=1) && (y=10) and (x=1) & (y=10) expressions return, respectively?
    Given x = 96, y = 1, and z = 69, what does the expression !y ? x == z : y return?
    What do the ~0011000000111001 and ~1100111111000110 expressions return?
    Given x=9, what does (x%2==0)||(x%3==0) return? How about (x%2==0)&&(x%3==0)?
    Is 8 >> 3 equivalent to 8 / 23? How about 1 << 3?


    Given x = 0xEFFF and y = 0x1000, what do ~x and ~y return, respectively, in the hex format?
    Taking the values of x and y assigned in exercise 1, write a program that prints out the return values of !x and !y by using both the %d and %u formats in the printf() function.

    Given x = 123 and y = 4, write a program that displays the results of the x << y and x >> y expressions.
    Write a program that shows the return values (in hex) of the 0xFFFF^0x8888, 0xABCD & 0x4567, and 0xDCBA | 0x1234 expressions.
    Use the ?: operator and the for statement to write a program that keeps taking the characters entered by the user until the character q is accounted. (Hint: Put the x!='q' ? 1 : 0 expression to the second field in the for statement.)

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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()