Programming in C

352 Chapter 16 Input and Output Operations in C

Program 16.1 Output

Integers:

425 651 1a9 425

1a9 1A9 0x1a9 0X1A9

+425 425 0000425 0000425

17 21 11 17

61817 170571 f179 61817

75000 222370 124f8 75000

1311768465173141112 110642547402215053170 1234567812345678 1311768465173141112

Floats and Doubles:

12.978000 1.297800e+01 12.978

12.98 1.30e+01

13 1e+01

12.98 1.30e+01

-97.458300 -9.745830e+01 -97.4583

-97.458

-97.46

Characters:

X

X X

58

Strings:

abcdefghijklmnopqrstuvwxyz

abcde

abcdefghijklmnopqrstuvwxyz

abcde

abcde

Pointers:

0xbffffc20 0xbffffbf0

This is fun.

c1 = 4, c2 = 12

It’s worthwhile to take some time to explain the output in detail.The first set of output

deals with the display of integers:short,long,unsigned, and “normal”ints.The first

line displays iin decimal (%i), octal (%o), hexadecimal (%x), and unsigned (%u) formats.

Notice that octal numbers are not preceded by a leading 0 when they are displayed.

The next line of output displays the value of iagain. First,iis displayed in hexadeci-

mal notation using %x.The use of a capital X(%#X) causes printfto use uppercase letters

A–F instead of lowercase letters when displaying numbers in hexadecimal.The #modifi-

er (%#x) causes a leading 0xto appear before the number and causes a leading 0Xto

appear when the capital Xis used as the conversion character (%#X).