add -g to libft makefile; add day 3

2024/3/part2.c

@@ -0,0 +1,79 @@
+
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part1.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2024/12/03 10:22:09 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "libft/libft.h"
+
+static int get_instruction(char **line, int *n1, int *n2)
+{
+	int i;
+
+	if(ft_strncmp(*line, "mul(", 4))
+		return(0);
+	*line += 4;
+	i = 0;
+	*n1 = ft_atoi(*line);
+	while(ft_isdigit((*line)[i]))
+		i++;
+	if(!i || i > 3)
+		return(0);
+	*line += i;
+	if(**line != ',')
+		return(0);
+	(*line)++;
+	i = 0;
+	*n2 = ft_atoi(*line);
+	while(ft_isdigit((*line)[i]))
+		i++;
+	if(!i || i > 3)
+		return(0);
+	*line += i;
+	return(**line == ')');
+}
+
+static long int res_line(char *line, int *enable)
+{
+	int res;
+	int n1;
+	int n2;
+	
+	res = 0;
+	while(*line)
+	{
+		if(!ft_strncmp(line, "do()", 4))
+			*enable = 1;
+		if(!ft_strncmp(line, "don't()", 7))
+			*enable = 0;
+		if(*enable && get_instruction(&line, &n1, &n2))	
+			res += n1 * n2;
+		line++;
+	}
+	return(res);
+}
+
+long int resolve_part2(char *input, char **split)
+{
+	(void)input;
+	long int res;
+	int enable;
+
+	res = 0;
+	enable = 1;
+	while(*split)
+	{
+		res += res_line(*split, &enable);	
+		split++;
+	}
+	return(res);
+}