1 files changed, 19 insertions, 0 deletions
diff --git a/three/expand.c b/three/expand.c
new file mode 100644
index 0000000..180cc98
--- /dev/null
+++ b/three/expand.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+
+int
+main()
+{
+	int c, p;
+	while ((c = getchar()) != EOF) {
+		if (c == '-') {
+			c = getchar();
+			for (++p; p < c + 1; ++p) {
+				putchar(p);
+			}
+		} else {
+			putchar(c);
+		}
+		p = c;
+	}
+	return 0;
+}