216 lines
8.2 KiB
C
216 lines
8.2 KiB
C
#include <libc.h>
|
||
#include <stdarg.h>
|
||
|
||
int ft_printf(char *fmt, ...)
|
||
{
|
||
va_list ap;
|
||
int d;
|
||
char c, *s;
|
||
|
||
va_start(ap, fmt);
|
||
while (*fmt)
|
||
switch(*fmt++) {
|
||
case 's': /* string */
|
||
s = va_arg(ap, char *);
|
||
printf("string %s\n", s);
|
||
break;
|
||
case 'd': /* int */
|
||
d = va_arg(ap, int);
|
||
printf("int %d\n", d);
|
||
break;
|
||
case 'c': /* char */
|
||
/* Note: char is promoted to int. */
|
||
c = va_arg(ap, int);
|
||
printf("char %c\n", c);
|
||
break;
|
||
}
|
||
va_end(ap);
|
||
return (0);
|
||
}
|
||
|
||
int main(void)
|
||
{
|
||
char *s;
|
||
char *str;
|
||
char c;
|
||
int i;
|
||
|
||
s = "scd";
|
||
str = "bravo";
|
||
c = 'c';
|
||
i = 6;
|
||
ft_printf(s, str, c, i);
|
||
printf("\n");
|
||
|
||
printf("-----------------------------------------------\n");
|
||
printf("- BASICS -\n");
|
||
printf("- -\n");
|
||
printf("- %%[flag][width][.precision][length]specifier -\n");
|
||
printf("- -\n");
|
||
printf("- conversions : cspdiuxX%% -\n");
|
||
printf("- flags : -0.* -\n");
|
||
printf("- taille de champ minimale -\n");
|
||
printf("- -\n");
|
||
printf("- char *str = \"bravo\"; -\n");
|
||
printf("- char c = 'c'; -\n");
|
||
printf("- int i = 6; -\n");
|
||
printf("-----------------------------------------------\n");
|
||
printf("-----------------------------------------------\n");
|
||
printf("- conversions : cspdiuxX%% -\n");
|
||
printf("-----------------------------------------------\n\n");
|
||
|
||
printf("(\"no newline\") ft : "); printf("no newline"); printf("-->ligne suivante\n"); printf("\n");
|
||
|
||
printf("(\"newline\\n\") ft : "); printf("newline\n"); printf("-->ligne suivante\n"); printf("\n");
|
||
|
||
printf("(\"%%%%\") ft : "); printf("%%\n"); printf("\n");
|
||
|
||
printf("(\"\\\"\") ft : "); printf("\"\n"); printf("\n");
|
||
|
||
printf("(\"%%c\",'c') ft : "); printf("%c\n", 'c'); printf("\n");
|
||
|
||
printf("(\"%%s\",\"str\") ft : "); printf("%s\n", "str"); printf("\n");
|
||
|
||
printf("(\"%%s\",str) ft : "); printf("%s\n", str); printf("\n");
|
||
|
||
printf("(\"%%p\",str) ft : "); printf("%p\n", str); printf("\n");
|
||
|
||
printf("(\"%%d\",456) ft : "); printf("%d\n", 456); printf("\n");
|
||
|
||
printf("(\"%%i\",846) ft : "); printf("%i\n", 846); printf("\n");
|
||
|
||
printf("(\"%%u\",87) ft : "); printf("%u\n", 87); printf("\n");
|
||
|
||
printf("(\"%%u\",-87) ft : "); printf("%u\n", -87); printf("\n");
|
||
|
||
printf("(\"%%x\",78) ft : "); printf("%x\n", 78); printf("\n");
|
||
|
||
printf("(\"%%X\",78) ft : "); printf("%X\n", 78); printf("\n");
|
||
|
||
printf("-----------------------------------------------\n");
|
||
printf("- flags : -0.* -\n");
|
||
printf("-----------------------------------------------\n\n");
|
||
|
||
// printf("(\"%%3s\",\"a\") ft : "); ft_printf("'%3s'\n", "a");
|
||
printf("(\"%%3s\",\"a\") : "); printf("'%3s'\n", "a"); printf("\n");
|
||
|
||
// printf("(\"%%-3s\",\"a\") ft : "); ft_printf("'%-3s'\n]", "a");
|
||
printf("(\"%%-3s\",\"a\") : "); printf("'%-3s'\n ", "a"); printf("\n");
|
||
|
||
// printf("(\"%%-9s\",\"a\") ft : "); ft_printf("'%-9s'\n]", "a");
|
||
printf("(\"%%-9s\",\"a\") : "); printf("'%-9s'\n ", "a"); printf("\n");
|
||
|
||
// printf("(\"%%-1s\",\"ab\") ft : "); ft_printf("'%-1s'\n]", "ab");
|
||
printf("(\"%%-1s\",\"ab\") : "); printf("'%-1s'\n ", "ab"); printf("\n");
|
||
|
||
// printf("(\"%%-2s\",\"ab\") ft : "); ft_printf("'%-2s'\n]", "ab");
|
||
printf("(\"%%-2s\",\"ab\") : "); printf("'%-2s'\n ", "ab"); printf("\n");
|
||
|
||
// printf("(\"%%-3s\",\"ab\") ft : "); ft_printf("'%-3s'\n]", "ab");
|
||
printf("(\"%%-3s\",\"ab\") : "); printf("'%-3s'\n ", "ab"); printf("\n");
|
||
|
||
// printf("(\"%%-3i\",3) ft : "); ft_printf("'%-3i'\n", 3);printf("");
|
||
printf("(\"%%-3i\",3) : "); printf("'%-3i'\n", 3); printf("\n");
|
||
|
||
// printf("(\"%%-3i\",123456) ft : "); ft_printf("'%-3i'\n", 123456);
|
||
printf("(\"%%-3i\",123456) : "); printf("'%-3i'\n", 123456); printf("\n");
|
||
|
||
// printf("(\"%%03i\",1) ft : "); ft_printf("'%03i'\n", 1);
|
||
printf("(\"%%03i\",1) : "); printf("'%03i'\n", 1); printf("\n");
|
||
|
||
// printf("(\"%%*i\",3,1) ft : "); ft_printf("'%*i'\n", 3, 1);
|
||
printf("(\"%%*i\",3,1) : "); printf("'%*i'\n", 3, 1); printf("\n");
|
||
|
||
// printf("(\"%%-*i\",3,1) ft : "); ft_printf("'%-*i'\n", 3, 1);printf("");
|
||
printf("(\"%%-*i\",3,1) : "); printf("'%-*i'\n", 2, 1); printf("\n");
|
||
|
||
printf("-----------------------------------------------\n");
|
||
printf("- BONUS -\n");
|
||
printf("- conversions : nfge -\n");
|
||
printf("- flags : l ll h hh # ' + -\n");
|
||
printf("-----------------------------------------------\n\n");
|
||
|
||
// printf("\nBONUS:\n");
|
||
// // ft_printf("%n\n", );
|
||
// printf("%n\n");
|
||
// // ft_printf("%f\n", );
|
||
// printf("%f\n", );
|
||
// // ft_printf("%g\n", );
|
||
// printf("%g\n", );
|
||
// // ft_printf("%e\n", );
|
||
// printf("%e\n", );
|
||
//
|
||
// printf("\nADD:\n");
|
||
// // ft_printf("%E\n", );
|
||
// printf("%E\n", );
|
||
// // ft_printf("%G\n", );
|
||
// printf("%G\n", );
|
||
// // ft_printf("%o\n", );
|
||
// printf("%o\n", );
|
||
return (0);
|
||
}
|
||
|
||
// usage :
|
||
// %[flags][width][.precision][length]specifier
|
||
//
|
||
// [specifiers]
|
||
// c character
|
||
// s string of characters
|
||
// p pointer adress
|
||
// d (or i) signed decimal integer
|
||
// i (or d) signed decimal integer
|
||
// u unsigned decimal integer
|
||
// x unsigned hexadecimal integer
|
||
// X unsigned hexadecimal integer (capital letters)
|
||
//( n nothing printed
|
||
//( f decimal floating point
|
||
//( g uses the shorter of %e or %f
|
||
//( e scientific notation (mantissa/exponent) using e
|
||
//((E scientific notation (mantissa/exponent) using E
|
||
//((G uses the shorter of %E or %f
|
||
//((o signed octal
|
||
//
|
||
// [flags]
|
||
// - left-justify within the given field width
|
||
// 0 left-pads the number with zeroes (0) instead of spaces, where
|
||
// padding is specified (see width sub-specifier)
|
||
//( + forces to precede the result with a plus or minus sign even for
|
||
// positive numbers)
|
||
//( (space) if no sign is going to be written, a blank space is inserted
|
||
// before the value)
|
||
//( # used with o, x or X specifiers the value is preceded with 0, 0x
|
||
// or 0X respectively for values different than zero. Used with e,
|
||
// E and f, it forces the written output to contain a decimal point
|
||
// even if no digits would follow. By default, if no digits follow,
|
||
// no decimal point is written. Used with g or G the reult is the
|
||
// same as with e or E but trailing zeros are not removed)
|
||
//
|
||
// [width]
|
||
// (nbr) minimum number of characters to be printed. if the value to be
|
||
// printed is shorter than this number, the result is padded with
|
||
// blank spaces. The value is not truncated even if the result is
|
||
// larger
|
||
// * the width is not specified in the format string, but as an
|
||
// additional integer value argument preceding the argument that
|
||
// has to be formatted
|
||
//
|
||
// [.precision]
|
||
// .nbr fot integer specifiers (d,i,o,x,X) - precision specifies the
|
||
// minimum number of digits to be written. If the value to be
|
||
// written is shorter than this number, the result is padded with
|
||
// leading zeros. The value is not truncated even if the result is
|
||
// longer. A precision of 0 means that no character is written for
|
||
// the value 0. For e, E and f specifiers − this is the number of
|
||
// digits to be printed after the decimal point. For g and G
|
||
// specifiers − This is the maximum number of significant digits
|
||
// to be printed. For s − this is the maximum number of characters
|
||
// to be printed. By default all characters are printed until the
|
||
// ending null character is encountered. For c type − it has no
|
||
// effect. When no precision is specified, the default is 1. If the
|
||
// period is specified without an explicit value for precision, 0
|
||
// is assumed
|
||
// .* the precision is not specified in the format string, but as an
|
||
// additional integer value argument preceding the argument that
|
||
// has to be formated
|
||
//
|