diff --git a/第一讲 变量、输入输出、表达式与顺序语句/609.cpp b/第一讲 变量、输入输出、表达式与顺序语句/609.cpp
new file mode 100644
index 0000000..d816774
--- /dev/null
+++ b/第一讲 变量、输入输出、表达式与顺序语句/609.cpp	
@@ -0,0 +1,12 @@
+#include <cstdio>
+
+using namespace std;
+
+int main()
+{
+    int a, b;
+    double c;
+    scanf("%d%d%lf", &a, &b, &c);
+    printf("NUMBER = %d\nSALARY = U$ %.2lf", a, b * c);
+    return 0;
+}
\ No newline at end of file