Formatted I/O: printfand scanf 349

Ta b le 16.1 printfFlags

Flag Meaning

• Left-justify value

• Precede value with +or -
  (space) Precede positive value with space character
  0 Zero fill numbers

  Precede octal value with 0 , hexadecimal value with 0x(or 0X); display decimal

  
  

  point for floats; leave trailing zeroes for gor Gformat

  
  

Ta b le 16.2 printfWidth and Precision Modifiers

Specifier Meaning

number Minimum size of field

* Ta ke next argument to printfas size of field

.number Minimum number of digits to display for integers; number of decimal

places for eor fformats; maximum number of significant digits to display

for g; maximum number of characters for sformat

.* Ta ke next argument to printfas precision (and interpret as indicated in

preceding row)

Ta b le 16.3 printfType Modifiers

Type Meaning

hh Display integer argument as a character

h* Display short integer

l* Display long integer

ll* Display long long integer

L Display long double

j* Display intmax_tor uintmax_tvalue

t* Display ptrdiff_tvalue

z* Display size_tvalue

*Note:These modifiers can also be placed in front of the nconversion character to

indicate the corresponding pointer argument is of the specified type.
Ta b le 16.4 lists the conversion characters that can be specified in the format string.