Merge pull request #13 from dooooooooinggggg/master

【動くのですが！】Create tatsu-cat.c

Author: dooooooooinggggg

cat/tatsu-cat/.gitignore

@@ -0,0 +1 @@
+tatsu_cat

cat/tatsu-cat/Makefile

@@ -0,0 +1,3 @@
+all:
+	gcc -o tatsu_cat tatsu-cat.c
+	chmod u+x tatsu_cat

cat/tatsu-cat/tatsu-cat.c

@@ -0,0 +1,25 @@
+#include <fcntl.h>
+#include <unistd.h>
+#define N 1024
+
+int main(int argc, char *argv[])
+{
+    int fd, buflen;
+    char buf[N];
+    if (argc < 2)
+        _exit(1);
+    for (int i = 1; i < argc; i++)
+    {
+        if ((fd = open(argv[i], O_RDONLY)) < 0)
+        {
+            write(1, "No such file\n\n", 32); // 標準出力
+            close(fd);
+            continue;
+        }
+
+        while ((buflen = read(fd, buf, N)) > 0)
+            write(1, buf, buflen); // 標準出力
+        close(fd);
+    }
+    return 0;
+}