mirror of
https://codeberg.org/la-chouette/minishell.git
synced 2025-12-06 07:28:09 +01:00
90 lines
2 KiB
C
90 lines
2 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_itoa.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jguelen <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/10/18 16:29:21 by jguelen #+# #+# */
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/* Updated: 2024/10/23 09:15:57 by jguelen ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include <stdlib.h>
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#include <stdio.h>
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/*Returns the size of the string needed to represent n in base 10 as a string*/
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/* DOES NOT INCLUDE THE NULL BYTE*/
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static size_t ft_itolen(int n)
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{
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size_t i;
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int calc;
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i = 0;
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calc = n;
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if (n == 0)
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return (1);
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while (calc != 0)
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{
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calc /= 10;
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i++;
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}
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if (n > 0)
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return (i);
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return (i + 1);
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}
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char *ft_itoa(int n)
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{
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char *arg;
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int calc;
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size_t len;
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calc = n;
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len = ft_itolen(n);
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arg = (char *)malloc((len + 1) * sizeof(char));
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if (arg == NULL)
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return (NULL);
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arg[len--] = '\0';
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if (calc == 0)
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arg[0] = '0';
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if (calc < 0)
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{
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arg[0] = '-';
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arg[len--] = (-1 * (calc % 10)) + '0';
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calc /= -10;
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}
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while (calc > 0)
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{
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arg[len--] = calc % 10 + '0';
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calc /= 10;
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}
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return (arg);
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}
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/*
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int main(void)
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{
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int i;
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char *s;
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i = -2147483648;
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i = (-1 * (i % 10));
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printf("Test op : %d\n", i);
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i = -2147483648;
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s = ft_itoa(i);
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printf("%s\n", s);
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free(s);
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i = -2;
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s = ft_itoa(i);
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printf("%s\n", s);
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free(s);
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i = 2147483647;
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s = ft_itoa(i);
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printf("%s\n", s);
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free(s);
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i = 0;
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s = ft_itoa(i);
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printf("%s\n", s);
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free(s);
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return (0);
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}*/
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