1 files changed, 14 insertions, 0 deletions
diff --git a/2025-linuxdays/swrange.c b/2025-linuxdays/swrange.c
new file mode 100644
index 0000000..1889ba4
--- /dev/null
+++ b/2025-linuxdays/swrange.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main(int argc, char *argv[]) {
+  int val = getchar();
+  switch (val) {
+  case '0' ... '9':
+    printf("Number\n");
+	break;
+  default:
+    printf("Not a number\n");
+    break;
+  }
+  return 0;
+}