From 861a36d86e7587c043131228cf3a08afd7bc43ad Mon Sep 17 00:00:00 2001 From: yctct Date: Thu, 5 Feb 2026 11:56:49 +0100 Subject: Add files, first commit --- ft_isdigit.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 ft_isdigit.c (limited to 'ft_isdigit.c') diff --git a/ft_isdigit.c b/ft_isdigit.c new file mode 100644 index 0000000..a41b0e5 --- /dev/null +++ b/ft_isdigit.c @@ -0,0 +1,47 @@ +/* +Libft Copyright (C) 2026 yctct + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see . +*/ + +#include "libft.h" + +int ft_isdigit(int c) +{ + if (c >= 48 && c <= 57) + return (1); + return (0); +} +/* +int main(void) +{ + printf("ft_isdigit: %d, %d\n", ft_isdigit(0), 0); + printf(" isdigit: %d, %d\n", isdigit(0), 0); + printf("\n"); + printf("ft_isdigit: %d, %d\n", ft_isdigit(47), 47); + printf(" isdigit: %d, %d\n", isdigit(47), 47); + printf("\n"); + printf("ft_isdigit: %d, %d\n", ft_isdigit(48), 48); + printf(" isdigit: %d, %d\n", isdigit(48), 48); + printf("\n"); + printf("ft_isdigit: %d, %d\n", ft_isdigit(57), 57); + printf(" isdigit: %d, %d\n", isdigit(57), 57); + printf("\n"); + printf("ft_isdigit: %d, %d\n", ft_isdigit(58), 58); + printf(" isdigit: %d, %d\n", isdigit(58), 58); + printf("\n"); + printf("ft_isdigit: %d, %d\n", ft_isdigit(127), 127); + printf(" isdigit: %d, %d\n", isdigit(127), 127); +} +*/ -- cgit v1.2.3