42/42_INT_03_ft_printf
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Merge branch 'master' of https://bitbucket.org/hugogogo/printf

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hugodu69
2020-01-02 15:16:54 +01:00
parent cfc6875d04 e68938441c
commit d412fdffcf
2 changed files with 239 additions and 0 deletions
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.gitignore vendored
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@@ -53,6 +53,7 @@ dkms.conf
# OS generated files #
*.swp
*.swo
.DS_Store
.DS_Store?
._*

238
ft_printf.c Normal file
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@@ -0,0 +1,238 @@
#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 : "); 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\",78) ft : "); ft_printf("%x\n", 78);
printf("(\"%%x\",78) : "); printf("%x\n", 78); printf("\n");
// printf("(\"%%X\",78) ft : "); ft_printf("%X\n", 78);
printf("(\"%%X\",78) : "); 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("(\"%%-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("(\"%%*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", 3, 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
//