diff --git a/day6/d13.cpp b/day6/d13.cpp
new file mode 100644
index 0000000..d5d2547
--- /dev/null
+++ b/day6/d13.cpp
@@ -0,0 +1,21 @@
+// 三目运算符
+// 从键盘输入三个整数,输出最大或最小的那个数
+#include <iostream>
+#include <bitset>
+
+using namespace std;
+
+int main()
+{
+    int x, y, z;
+    cout << "请输入三个整数: ";
+    cin >> x >> y >> z;
+
+    int max = x > y ? (x > z ? x : z) : (y > z ? y : z);
+    cout << "最大值为: " << max << endl;
+
+    int min = x < y ? (x < z ? x : z) : (y < z ? y : z);
+    cout << "最小值为: " << min << endl;
+
+    return 0;
+}
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