diff --git a/mty12.md b/mty12.md
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+// 函数功能：按学号查找学生成绩并显示查找结果 
+void SearchbyNum(STU stu[], int n, int m)
+{
+	long  number;
+	int   i, j;
+	printf("Input the number you want to search:");
+	scanf("%ld", &number);
+    
+    /* ---------- begain ---------- */
+	
+    /* ----------- end ----------- */
+	
+	printf("\nNot found!\n");
+}
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