42/42_INT_03_ft_printf
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

precision des commentaires pour le fonctionnement de printf

Browse Source
This commit is contained in:
Hugo LAMY
2020-01-05 18:12:58 +01:00
parent 1a9b45427d
commit d46781ca9c
3 changed files with 407 additions and 321 deletions
Download Patch File Download Diff File Expand all files Collapse all files

389
ft_printf.c
View File

@@ -1,6 +1,6 @@
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include "ft_printf.h"
// %[arg_nbr$][flags][][width][.precision][length]specifier
int ft_printf(char *fmt, ...)
{
@@ -9,22 +9,25 @@ int ft_printf(char *fmt, ...)
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;
while (*fmt != '\0')
{
if (*fmt == 's')
{
s = va_arg(ap, char *);
printf("string %s\n", s);
}
if (*fmt == 'd')
{
d = va_arg(ap, int);
printf("int %d\n", d);
}
if (*fmt == 'c')
{
c = va_arg(ap, int);
printf("char %c\n", c);
}
fmt++;
}
va_end(ap);
return (0);
}
@@ -41,309 +44,53 @@ int main(void)
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 : "); ft_printf("no newline"); printf("-->ligne suivante\n");
printf("(\"no newline\") : "); printf("no newline"); printf("-->ligne suivante\n"); printf("\n");
// printf("(\"newline\\n\") ft : "); ft_printf("newline\n"); printf("-->ligne suivante\n");
printf("(\"newline\\n\") : "); printf("newline\n"); printf("-->ligne suivante\n"); printf("\n");
// printf("(\"%%%%\") ft : "); ft_printf("%%\n");
printf("(\"%%%%\") : "); printf("%%\n"); printf("\n");
// printf("(\"\\\"\") ft : "); ft_printf("\"\n");
printf("(\"\\\"\") : "); printf("\"\n"); printf("\n");
// printf("(\"%%c\",'c') ft : "); ft_printf("%c\n", 'c');
printf("(\"%%c\",'c') : "); printf("%c\n", 'c'); printf("\n");
// printf("(\"%%s\",\"str\") ft : "); ft_printf("%s\n", "str");
printf("(\"%%s\",\"str\") : "); printf("%s\n", "str"); printf("\n");
// printf("(\"%%s\",str) ft : "); ft_printf("%s\n", str);
printf("(\"%%s\",str) : "); printf("%s\n", str); printf("\n");
// printf("(\"%%p\",str) ft : "); ft_printf("%p\n", str);
printf("(\"%%p\",str) : "); printf("%p\n", str); printf("\n");
// printf("(\"%%d\",456) ft : "); ft_printf("%d\n", 456);
printf("(\"%%d\",456) : "); printf("%d\n", 456); printf("\n");
// printf("(\"%%i\",846) ft : "); ft_printf("%i\n", 846);
printf("(\"%%i\",846) : "); printf("%i\n", 846); printf("\n");
// printf("(\"%%u\",87) ft : "); ft_printf("%u\n", 87);
printf("(\"%%u\",87) : "); printf("%u\n", 87); printf("\n");
// printf("(\"%%u\",-87) ft : "); ft_printf("%u\n", -87);
printf("(\"%%u\",-87) : "); printf("%u\n", -87); printf("\n");
// printf("(\"%%x\",124) ft : "); ft_printf("%x\n", 124);
printf("(\"%%x\",124) : "); printf("%x\n", 124); printf("\n");
// printf("(\"%%X\",124) ft : "); ft_printf("%X\n", 124);
printf("(\"%%X\",124) : "); printf("%X\n", 124); printf("\n");
// printf("(\"%%X\",123456) ft : "); ft_printf("%X\n", 123456);
printf("(\"%%X\",123456) : "); printf("%X\n", 123456); printf("\n");
// printf("(\"%%X\",0x1E240) ft : "); ft_printf("%X\n", 0x1E240);
printf("(\"%%X\",0x1E240) : "); printf("%X\n", 0x1E240); printf("\n");
// printf("(\"%%i\",0x1E240) ft : "); ft_printf("%i\n", 0x1E240);
printf("(\"%%i\",0x1E240) : "); printf("%i\n", 0x1E240); printf("\n");
printf("-----------------------------------------------\n");
printf("- flags : -0.* -\n");
printf("- taille de champ minimale -\n");
printf("-----------------------------------------------\n\n");
printf("- taille de champ minimale --------------------\n\n");
// printf("(\"%%3s\",\"a\") ft : "); ft_printf("'%3s'\n", "a");
printf("(\"%%3s\",\"a\") : "); printf("'%3s'\n", "a"); printf("\n");
// printf("(\"%%3s\",\"abcd\") ft : "); ft_printf("'%3s'\n", "abcd");
printf("(\"%%3s\",\"abcd\") : "); printf("'%3s'\n", "abcd"); printf("\n");
// printf("(\"%%3i\",12) ft : "); ft_printf("'%3i'\n", 12);
printf("(\"%%3i\",12) : "); printf("'%3i'\n", 12); printf("\n");
// printf("(\"%%2i\",12) ft : "); ft_printf("'%2i'\n", 12);
printf("(\"%%2i\",12) : "); printf("'%2i'\n", 12); printf("\n");
// printf("(\"%%1i\",12) ft : "); ft_printf("'%1i'\n", 12);
printf("(\"%%1i\",12) : "); printf("'%1i'\n", 12); printf("\n");
// printf("(\"%%0i\",0) ft : "); ft_printf("'%0i'\n", 0);
printf("(\"%%0i\",0) : "); printf("'%0i'\n", 0); printf("\n");
printf("- flag - --------------------------------------\n\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("(\"%%-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("- flag 0 --------------------------------------\n\n");
// printf("(\"%%03i\",1) ft : "); ft_printf("'%03i'\n", 1);
printf("(\"%%03i\",1) : "); printf("'%03i'\n", 1); printf("\n");
printf("- flag * --------------------------------------\n\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("(\"%%-*i\",3,1) : "); printf("'%-*i'\n", 3, 1); printf("\n");
printf("- flag . --------------------------------------\n\n");
// printf("(\"%%.5s\",\"12\") ft : "); ft_printf("'%.5s'\n", "12");
printf("(\"%%.5s\",\"12\") : "); printf("'%.5s'\n", "12"); printf("\n");
// printf("(\"%%.5i\",12) ft : "); ft_printf("'%.5i'\n", 12);
printf("(\"%%.5i\",12) : "); printf("'%.5i'\n", 12); printf("\n");
// printf("(\"%%.7X\",8645) ft : "); ft_printf("'%.7X'\n", 8645);
printf("(\"%%.7X\",8645) : "); printf("'%.7X'\n", 8645); printf("\n");
// printf("(\"%%7.7X\",8645) ft : "); ft_printf("'%7.7X'\n", 8645);
printf("(\"%%7.7X\",8645) : "); printf("'%7.7X'\n", 8645); printf("\n");
// printf("(\"%%10.7X\",8645) ft : "); ft_printf("'%10.7X'\n", 8645);
printf("(\"%%10.7X\",8645) : "); printf("'%10.7X'\n", 8645); printf("\n");
// printf("(\"%%7.10X\",8645) ft : "); ft_printf("'%7.10X'\n", 8645);
printf("(\"%%7.10X\",8645) : "); printf("'%7.10X'\n", 8645); printf("\n");
// printf("(\"%%.0i\",0) ft : "); ft_printf("'%.0i'\n", 0);
printf("(\"%%.0i\",0) : "); printf("'%.0i'\n", 0); printf("\n");
// printf("(\"%%.0X\",0) ft : "); ft_printf("'%.0X'\n", 0);
printf("(\"%%.0X\",0) : "); printf("'%.0X'\n", 0); printf("\n");
printf("-----------------------------------------------\n");
printf("- errors -\n");
printf("-----------------------------------------------\n\n");
// printf("(\"%%i\",3,2) ft : "); ft_printf("'%i'", 3, 2);
// printf("(\"%%i\",3,2) : "); printf("'%i'", 3, 2); printf(" [ERROR]\n\n");
// printf("(\"%%i-%%i\",3) ft : "); ft_printf("'%i-%i'", 3);
// printf("(\"%%i-%%i\",3) : "); printf("'%i-%i'", 3); printf(" [ERROR]\n\n");
// printf("(\"%%-03i\",1) ft : "); ft_printf("'%-03i'\n", 1);
// printf("(\"%%-03i\",1) : "); printf("'%-03i'\n", 1); printf("\n");
// printf("(\"%%010s\",str) ft : "); ft_printf("'%010s'\n", str);
// printf("(\"%%010s\",str) : "); printf("'%010s'\n", str); printf("\n");
// printf("(\"%%-010s\",str) ft : "); ft_printf("'%-010s'\n", str);
// printf("(\"%%-010s\",str) : "); printf("'%-010s'\n", str); printf("\n");
// printf("(\"%%X\",124) ft : "); ft_printf("%X\n", 124);
// printf("(\"%%X\",1E240) : "); printf("%X\n", 1E240); printf("\n");
// printf("(\"%%010.7X\",8645) : "); printf("'%010.7X'\n", 8645); printf("\n");
printf("-----------------------------------------------\n");
printf("- BONUS -\n");
printf("- conversions : nfge -\n");
printf("- flags : l ll h hh # ' + -\n");
printf("-----------------------------------------------\n\n");
// printf("(\"%%#X\",8645) : ");
// printf("'%#X' \n", 8645);
//
// printf("(\"%%#.7X\",8645) : ");
// printf("'%#.7X' \n", 8645);
//
// printf("(\"%%#010.7X\",8645) : ");
// printf("'%#010.7X' \n", 8645);
//
// printf("(\"%%#10.7X\",8645) : ");
// printf("'%#10.7X' \n", 8645);
//
// printf("(\"%%#10X\",8645) : ");
// printf("'%#10X' \n", 8645);
//
// printf("(\"%%#.10X\",8645) : ");
// printf("'%#.10X' \n", 8645);
//
// printf("(\"%%#10.10X\",8645) : ");
// printf("'%#10.10X' \n", 8645);
//
// printf("(\"%%#010X\",8645) : ");
// printf("'%#010X' \n", 8645);
// printf("-----------------------------------------------\n");
// printf("- ADD -\n");
// printf("- flags : $ -\n");
// printf("-----------------------------------------------\n\n");
// printf("(\"%%1$*2$i\",3,2) ft : "); ft_printf("'%1$*2$i'\n", 3, 2);
// printf("(\"%%1$*2$i\",3,2) : "); printf("'%1$*2$i'\n", 3, 2); printf("\n");
// printf("(\"%%2$*1$i\",3,2) ft : "); ft_printf("'%2$*1$i'\n", 3, 2);
// printf("(\"%%2$*1$i\",3,2) : "); printf("'%2$*1$i'\n", 3, 2); printf("\n");
return (0);
}
// conversions : cspdiuxX%%
// flags : -0.*
// conversions : nfge
// flags : l ll h hh # ' +
//
// usage :
// %[arg_nbr$][flags][][width][.precision][length]specifier
//
// [arg_nbr]
//( nbr$ specify the argument to access, they are numbered starting at 1
//
// [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)
//( # (o, x, X, a, A, e, E, f, F, g, G) used with (o, x or X) the
// value is preceded with 0, 0x or 0X for values different than
// zero. used with (e, E or 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 result is the same as with e or E but trailing
// zeros are not removed
//( ' (d, u, i, f, F) used with d, u or i, or the integral portion of
// a float f or F, the decimal conversions are printed by groups of
// thousands separated by the non-monetary separator returned by
// localeconv(3) (ex 123456789 -> 123,456,789)
//
//
// [specifiers]
// c char character
// s *char string of characters
// p * pointer adress
// d int (or i) signed decimal integer
// i int (or d) signed decimal integer
// u int unsigned decimal integer
// x int unsigned hexadecimal integer
// X int unsigned hexadecimal integer (capital letters)
//( n *int nothing printed
//( f float decimal floating point
//( e float scientific notation (mantissa/exponent) using e
//( g float uses the shorter of %e or %f
//((E float scientific notation (mantissa/exponent) using E
//((G float uses the shorter of %E or %f
//((o int signed octal
//((C char wide character
//((a float
//((S *char string of wide characters
//
// [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
//
/*
conversions : cspdiuxX%
flags : -,0,.,*
conversions : nfge
flags : l,ll,h,hh,#,', ,+
%[arg_nbr$][flags #,0,-, ,+,'][width *][.precision *][length hh,h,ll,l,L,j,t,z][specifier d,i,u,x,X,c,s,p,%,e,f,g,n,E,F,G,a,A,C,S,o]
% [flags 0,- ][width *][.precision *] [specifier d,i,u,x,X,c,s,p,% ]
% [flags #,', ,+] [length hh,h,ll,l ][specifier e,f,g,n ]
typedef struct s_prist
{
int print_nbr;
int arg_nbr;
char specifier;
char *flag;
int width;
int precision;
char *arg;
struct s_prist *next;
} t_prist;
("2 1 3 4 3", 1, 2, 3, 4)
store
{{printf_nbr 1; arg_nbr 2; specifier; flag; width; precision},
{printf_nbr 2; arg_nbr 1; specifier; flag; width; precision},
{printf_nbr 3; arg_nbr 3; specifier; flag; width; precision},
{printf_nbr 4; arg_nbr 4; specifier; flag; width; precision},
{printf_nbr 5; arg_nbr 3; specifier; flag; width; precision}}
sort_by_arg
{{printf_nbr 2; arg_nbr 1; specifier; flag; width; precision},
{printf_nbr 1; arg_nbr 2; specifier; flag; width; precision},
{printf_nbr 3; arg_nbr 3; specifier; flag; width; precision},
{printf_nbr 5; arg_nbr 3; specifier; flag; width; precision},
{printf_nbr 4; arg_nbr 4; specifier; flag; width; precision}}
add_str_to_print
{{printf_nbr 2; arg_nbr 1; specifier; flag; width; precision; arg},
{printf_nbr 1; arg_nbr 2; specifier; flag; width; precision; arg},
{printf_nbr 3; arg_nbr 3; specifier; flag; width; precision; arg},
{printf_nbr 5; arg_nbr 3; specifier; flag; width; precision; arg},
{printf_nbr 4; arg_nbr 4; specifier; flag; width; precision; arg}}
*/