diff --git a/第一讲 变量、输入输出、表达式与顺序语句/605.cpp b/第一讲 变量、输入输出、表达式与顺序语句/605.cpp
new file mode 100644
index 0000000..fb7fb4b
--- /dev/null
+++ b/第一讲 变量、输入输出、表达式与顺序语句/605.cpp	
@@ -0,0 +1,9 @@
+#include <cstdio>
+
+int main()
+{
+    int a, b;
+    scanf("%d%d", &a, &b);
+    printf("PROD = %d\n", a * b);
+    return 0;
+}