printf() 출력 형식 지정자

printf() 출력 형식 지정자 예제..


Example

/* PRINTF.C: This program uses the printf and wprintf functions
 * to produce formatted output.
 */

#include <stdio.h>

void main( void )
{
   char   ch = 'h', *string = "computer";
   int    count = -9234;
   double fp = 251.7366;
   wchar_t wch = L'w', *wstring = L"Unicode";

   /* Display integers. */
   printf( "Integer formats:\n"
           "\tDecimal: %d  Justified: %.6d  Unsigned: %u\n",
           count, count, count, count );

   printf( "Decimal %d as:\n\tHex: %Xh  C hex: 0x%x  Octal: %o\n",
            count, count, count, count );

   /* Display in different radixes. */
   printf( "Digits 10 equal:\n\tHex: %i  Octal: %i  Decimal: %i\n",
            0x10, 010, 10 );

   /* Display characters. */

   printf("Characters in field (1):\n%10c%5hc%5C%5lc\n", ch, ch, wch, wch);
   wprintf(L"Characters in field (2):\n%10C%5hc%5c%5lc\n", ch, ch, wch, wch);

   /* Display strings. */

   printf("Strings in field (1):\n%25s\n%25.4hs\n\t%S%25.3ls\n",
   string, string, wstring, wstring);
   wprintf(L"Strings in field (2):\n%25S\n%25.4hs\n\t%s%25.3ls\n",
       string, string, wstring, wstring);

   /* Display real numbers. */
   printf( "Real numbers:\n\t%f %.2f %e %E\n", fp, fp, fp, fp );

   /* Display pointer. */
   printf( "\nAddress as:\t%p\n", &count);

   /* Count characters printed. */
   printf( "\nDisplay to here:\n" );
   printf( "1234567890123456%n78901234567890\n", &count );
   printf( "\tNumber displayed: %d\n\n", count );
}

Output

Integer formats:
   Decimal: -9234  Justified: -009234  Unsigned: 4294958062
Decimal -9234 as:
   Hex: FFFFDBEEh  C hex: 0xffffdbee  Octal: 37777755756
Digits 10 equal:
   Hex: 16  Octal: 8  Decimal: 10
Characters in field (1):
         h    h    w    w
Characters in field (2):
         h    h    w    w
Strings in field (1):
                 computer
                     comp
   Unicode                      Uni
Strings in field (2):
                 computer
                     comp
   Unicode                      Uni
Real numbers:
   251.736600 251.74 2.517366e+002 2.517366E+002

Address as:   0012FFAC

Display to here:
123456789012345678901234567890
   Number displayed: 16