diff --git a/2207/天天乐学答案/C语言/C语言（二）/20.c b/2207/天天乐学答案/C语言/C语言（二）/20.c
index 92e81a8..c6f983a 100644
--- a/2207/天天乐学答案/C语言/C语言（二）/20.c
+++ b/2207/天天乐学答案/C语言/C语言（二）/20.c
@@ -12,11 +12,13 @@ int main()
 	for(i=1;i<n;i++)
 	{
 /**********Program**********/
-	
-
-
-
-
+		scanf("%d", &a);
+		if(a > max){
+			max = a;
+		}
+		if(a < min){
+			min = a;
+		}
 /**********  End  **********/	
 	}
 	printf("The maximum number is %d.\n",max);