diff --git a/2017-Greatroom-gin b/2017-Greatroom-gin
new file mode 100644
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+++ b/2017-Greatroom-gin
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+//黃競霆
+
+
+var readline = require('readline');
+
+var rl = readline.createInterface({
+    input: process.stdin,
+    output: process.stdout
+});
+
+function getMessage(height,weight){
+    var BMI = parseFloat(weight)/(parseFloat(height)*parseFloat(height));
+    if(BMI < 18.5 )
+	console.log("體重過輕");
+    else if( 18.5<= BMI < 24)
+	console.log("正常範圍");
+    else if( 24 <= BMI < 27)
+	console.log("過重");
+    else if( 27<= BMI < 30)
+	console.log("輕度肥胖");
+    else if( 30<= BMI < 35)
+	console.log("中度肥胖");
+    else
+	console.log("重度肥胖");
+}
+
+function getBMI(height,weight){
+    var BMI = parseFloat(weight)/(parseFloat(height)*parseFloat(height));
+    console.log("my BMI is ",BMI);
+}
+
+rl.question('Enter height: ',function(height){
+    rl.question('Enter weight: ',function(weight){
+        getBMI(height,weight)
+	getMessage(height,weight)
+        rl.close;
+    });
+});