33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
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/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_atoul_check.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: cchauvet <cchauvet@student.42angoulem +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/03/08 14:43:33 by cchauvet #+# #+# */
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/* Updated: 2023/05/02 13:15:12 by cchauvet ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "./extra.h"
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int ft_atoul_check(const char str[])
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{
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size_t i;
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unsigned long num;
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num = 0;
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i = 0;
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while (str[i] != '\0')
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{
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if (str[i] > '9' || str[i] < '0')
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return (0);
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if (num > num * 10 + str[i] - '0')
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return (0);
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num = num * 10 + str[i] - 48;
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i++;
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}
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return (1);
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}
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