new exercise add_prime_sum, cleaned atoi_base, and renamed pgcd

Author: zedin27

lvl3/add_prime_sum/add_prime_sum.c

@@ -0,0 +1,65 @@
+#include <unistd.h>
+
+void	ft_putnbr(int num)
+{
+	char c;
+
+	if (num >= 10)
+		ft_putnbr(num / 10);
+	c = (num % 10) + '0';
+	write(1, &c, 1);
+}
+
+int		ft_atoi(const char *str)
+{
+	int num;
+
+	num = 0;
+	while (*str >= '0' && *str <= '9')
+	{
+		num *= 10;
+		num += *str - '0';
+		str++;
+	}
+	return (num);
+}
+
+int		is_prime(int num)
+{
+	int i;
+
+	i = 2;
+	while (num > i)
+	{
+		if (num % i == 0)
+			return (0);
+		i++;
+	}
+	return (1);
+}
+
+int		add_prime_sum(int num)
+{
+	int sum;
+	int i;
+
+	sum = 0;
+	i = 2;
+	while (num >= i)
+	{
+		if (is_prime(i) == 1)
+			sum += i;
+		i++;
+	}
+	return (sum);
+}
+
+int		main(int argc, char *argv[])
+{
+	if (argc == 2)
+		ft_putnbr(add_prime_sum(ft_atoi(argv[1])));
+	else
+		ft_putnbr(0);
+	write(1, "\n", 1);
+	return (0);
+}

lvl3/expand_str_00/expand_str.c

@@ -42,7 +42,7 @@ int		ft_atoi_base(const char *str, int base)
 #ifdef TEST
 int	main(void)
 {
-	char test[] = "FF";
+	char test[] = "255";
 	int	base = 16;
 	printf("test: %s\nreal: %d\n", test, ft_atoi_base(test, base));
 }