diff --git a/TTT/bin/Debug/TTT.exe b/TTT/bin/Debug/TTT.exe
index 4acf4dc..5319d99 100644
Binary files a/TTT/bin/Debug/TTT.exe and b/TTT/bin/Debug/TTT.exe differ
diff --git a/TTT/functions.c b/TTT/functions.c
index a6d5ebb..cfae8a9 100644
--- a/TTT/functions.c
+++ b/TTT/functions.c
@@ -31,13 +31,13 @@ void init_board(char arr[3][3])  //
         }
     }
 }
-int whom_act()  //选择谁先行动
+int who_act()  //选择谁先行动
 {
-    int input = 0;
+    int input = 0;char ch=0;
     printf("****************************\n");
     printf("**     Who goes first?    **\n");
     printf("**      1:Computer        **\n");
-    printf("**      0:You             **\n");
+    printf("**      2:You             **\n");
     printf("****************************\n");
     while (1)
     {
@@ -45,10 +45,13 @@ int whom_act()  //选
         scanf("%d", &input);
         if (input == 1)
             return 1;
-        else if (input == 0)
-            return 0;
+        else if (input == 2)
+            return 2;
         else
+        {
+            while ((ch = getchar()) != EOF && ch != '\n');
             printf("wrong input\n");
+        }
     }
 }
 int check_(char arr[3][3])  //判断棋子是否下满
@@ -82,9 +85,9 @@ void player_act(char arr[3][3])  //
     char ch;
     while (1)
     {
-        printf("Coordinnate:(x,y)   1<=x<=3,1<=y<=3\n");
-        scanf("%d,%d", &x, &y);
-        if(arr[--x][--y] == ' ')
+        printf("Coordinnate: x,y   (0<x<4,0<y<4)\n");
+        int i=scanf("%d,%d", &x, &y);
+        if(i==2&&arr[--x][--y] == ' ')
         {
             arr[x][y] = 'O';
             break;
@@ -122,12 +125,12 @@ void computer_act_normal(char arr[3][3])
 {
     int value[3][3] = {{0}};
     int i = 0, j = 0, m = 0, n = 0, count_X = 0, count_O = 0, count_ = -1;
-    if(check_(arr) == empty)
+    if(check_(arr) == empty)//如果电脑先手，则电脑随机选择棋盘4个角
     {
         do
         {
             srand((unsigned)time(NULL));
-            i=rand()%3;
+            i=rand()%3;//随机数0，1，2
             j=rand()%3;
             if((i == j && i!=1 ) || j - i == 2 || i - j == 2)
             {
@@ -144,8 +147,8 @@ void computer_act_normal(char arr[3][3])
             {
                 for(m = 0; m < 3; m++)
                     arr[i][m] == 'O' ? count_O++ : arr[i][m] == 'X' ? count_X++ : count_++;
-                if(count_X == 2) value[i][j] += 6;
-                else if(count_O == 2) value[i][j] += 5;
+                if(count_X == 2) value[i][j] += 100;
+                else if(count_O == 2) value[i][j] += 50;
                 else if(count_X == 1 && count_ == 1) value[i][j] += 4;
                 else if(count_O == 1 && count_ == 1) value[i][j] += 3;
                 else if(count_ == 2) value[i][j] += 2;
@@ -155,12 +158,12 @@ void computer_act_normal(char arr[3][3])
                 count_ = -1;
                 for(m = 0; m < 3; m++)
                     arr[m][j] == 'O' ? count_O++ : arr[m][j] == 'X' ? count_X++ : count_++;
-                if(count_X == 2) value[i][j] += 6;
-                else if(count_O == 2) value[i][j] += 5;
+                if(count_X == 2) value[i][j] += 100;
+                else if(count_O == 2) value[i][j] += 50;
                 else if(count_X == 1 && count_ == 1) value[i][j] += 4;
                 else if(count_O == 1 && count_ == 1) value[i][j] += 3;
                 else if(count_ == 2) value[i][j] += 2;
-                else value[i][j] += 1;
+                else value[i][j] += 0;
                 count_X = 0;
                 count_O = 0;
                 count_ = -1;
@@ -170,8 +173,8 @@ void computer_act_normal(char arr[3][3])
                     {
                         for(m = 0; m < 3; m++)
                             arr[m][m] == 'O' ? count_O++ : arr[m][m] == 'X' ? count_X++ : count_++;
-                        if(count_X == 2) value[i][j] += 6;
-                        else if(count_O == 2) value[i][j] += 5;
+                        if(count_X == 2) value[i][j] += 100;
+                        else if(count_O == 2) value[i][j] += 50;
                         else if(count_X == 1 && count_ == 1) value[i][j] += 4;
                         else if(count_O == 1 && count_ == 1) value[i][j] += 3;
                         else if(count_ == 2) value[i][j] += 2;
@@ -184,8 +187,8 @@ void computer_act_normal(char arr[3][3])
                     {
                         for(m = 0, n = 2; m < 3; m++, n--)
                             arr[m][n] == 'O' ? count_O++ : arr[m][n] == 'X' ? count_X++ : count_++;
-                        if(count_X == 2) value[i][j] += 6;
-                        else if(count_O == 2) value[i][j] += 5;
+                        if(count_X == 2) value[i][j] += 100;
+                        else if(count_O == 2) value[i][j] += 50;
                         else if(count_X == 1 && count_ == 1) value[i][j] += 4;
                         else if(count_O == 1 && count_ == 1) value[i][j] += 3;
                         else if(count_ == 2) value[i][j] += 2;
diff --git a/TTT/main.c b/TTT/main.c
index e942993..b0a9f71 100644
--- a/TTT/main.c
+++ b/TTT/main.c
@@ -4,25 +4,25 @@
 #include "sanziqi.h"
 int main()   //主函数
 {
-    char arr[3][3], ch;
+    char arr[3][3], ch=0;
     while(1)
     {
         menu();
         int i = 0;
-        scanf("%d", &i);
+        scanf("%d", &i);//选择开始或结束
         if(i == start_game)
         {
             int choice = 0;
             mode();
             init_board(arr);
-            again: i = scanf("%d", &choice);
+            again: i = scanf("%d", &choice);//选择难度
             if(i == 1)
             {
                 switch(choice)
                 {
                 case 1:
                     print_board(arr);
-                    if(whom_act() == computer_first)
+                    if(who_act() == computer_first)
                     {
                         while(check_(arr) != full)
                         {
@@ -61,7 +61,7 @@ int main()   //
                     break;
                 case 2:
                     print_board(arr);
-                    if(whom_act() == computer_first)
+                    if(who_act() == computer_first)
                     {
                         while(check_(arr) != full)
                         {
diff --git a/TTT/obj/Debug/functions.o b/TTT/obj/Debug/functions.o
index 610d5e9..bac36c6 100644
Binary files a/TTT/obj/Debug/functions.o and b/TTT/obj/Debug/functions.o differ
diff --git a/TTT/obj/Debug/main.o b/TTT/obj/Debug/main.o
index e4b84dc..76b9322 100644
Binary files a/TTT/obj/Debug/main.o and b/TTT/obj/Debug/main.o differ
diff --git a/TTT/sanziqi.h b/TTT/sanziqi.h
index e0a2b8e..5f4970a 100644
--- a/TTT/sanziqi.h
+++ b/TTT/sanziqi.h
@@ -4,7 +4,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #define computer_first 1
-#define player_first 0
+#define player_first 2
 #define start_game 1
 #define end_game 0
 #define full 9
@@ -17,7 +17,7 @@ void print_board(char arr[3][3]);  //鎵撳嵃妫嬬洏
 
 void menu();  //鑿滃崟
 
-int whom_act();  //閫夋嫨璋佸厛琛屽姩
+int who_act();  //閫夋嫨璋佸厛琛屽姩
 
 int check_(char arr[3][3]);  //鍒ゆ柇妫嬬洏鐘舵��