remove inputs

2022/2/main.c

@@ -0,0 +1,51 @@
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+long int resolve(char *input);
+
+char *get_input(char *file)
+{
+	int fd;
+	int rd_len;
+	char buffer[1000];
+	int len;
+	char *res;
+
+	fd = open(file, O_RDONLY);
+	len = 0;
+	if(fd < 0)
+		return(0);
+	rd_len = -1;
+	while(rd_len)
+	{
+		rd_len = read(fd, buffer, 1000);
+		len+= rd_len;
+	}
+	close(fd);
+	res = malloc(len + 1);
+	if(!res)
+		return(0);
+	fd = open(file, O_RDONLY);
+	if(fd < 0)
+		return(0);
+	rd_len = read(fd,res, len);
+	res[len] = 0;
+	return(res);
+}
+
+int main(void)
+{
+	char *input;
+
+	input = get_input("input");
+	if(!input)
+	{
+		printf("file read error\n");
+		return(1);
+	}
+	printf("result: %ld\n", resolve(input));
+	free(input);
+	return(0);
+}