Merge pull request #52 from pinguxx28/main

shortened exercise 1-12

Author: ohkimur

chapter_1/exercise_1_12/copy_io_nl.c

@@ -1,27 +1,20 @@
-#include <stdio.h>
-
-#define OUT 0
-#define IN 1
-
-int main(void)
-{
-  char c;
-  int state;
-
-  state = OUT;
-  while ((c = getchar()) != EOF)
-  {
-    if (c != ' ' && c != '\t' && c != '\n')
-    {
-      putchar(c);
-      state = IN;
-    }
-    else if (state)
-    {
-      putchar('\n');
-      state = OUT;
-    }
-  }
-
-  return 0;
-}
+#include <stdio.h>
+
+int main(void)
+{
+  char c;
+
+  while ((c = getchar()) != EOF)
+  {
+    if (c == ' ' || c == '\t' || c == '\n')
+    {
+      putchar('\n');
+    }
+    else
+    {
+      putchar(c);
+    }
+  }
+
+  return 0;
+}