diff --git a/mty12.md b/mty12.md
index 9aeee6a..e754ecc 100644
--- a/mty12.md
+++ b/mty12.md
@@ -1,14 +1,27 @@
 // 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;
+	long number;
 	int   i, j;
 	printf("Input the number you want to search:");
 	scanf("%ld", &number);
-    
+
     /* ---------- begain ---------- */
-	
+for(i=0;i<n;i++)
+{
+	if (stu[i].num==number)
+		{
+			printf("%ld\t%s\t", stu[i].num, stu[i].name);
+			for (j=0; j<m; j++)
+			{
+				printf("%.0f\t", stu[i].score[j]);
+			}
+			printf("%.0f\t%.0f\n", stu[i].sum, stu[i].aver);
+			return;
+		}
+
     /* ----------- end ----------- */
 	
 	printf("\nNot found!\n");
-}
\ No newline at end of file
+}
+}