From 49891f6bce29843f503b437c84d83cb787ecfa87 Mon Sep 17 00:00:00 2001
From: Zhineng Li <im@zhineng.li>
Date: Sat, 10 Jan 2026 16:37:39 +0800
Subject: first commit

---
 ch01/ex09-copy.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 ch01/ex09-copy.c

(limited to 'ch01/ex09-copy.c')

diff --git a/ch01/ex09-copy.c b/ch01/ex09-copy.c
new file mode 100644
index 0000000..2303b83
--- /dev/null
+++ b/ch01/ex09-copy.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+
+/* merge consecutive blanks */
+int main()
+{
+	int c, b;
+
+	b = 0;
+	while ((c = getchar()) != EOF) {
+		if (c != ' ') {
+			putchar(c);
+			b = 0;
+		}
+
+		if (c == ' ') {
+			if (b == 0)
+				putchar(c);
+			b = 1;
+		}
+	}
+}
-- 
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