As is, the program does not terminate with a tie if all the nine positions on th
ID: 3856197 • Letter: A
Question
As is, the program does not terminate with a tie if all the nine positions on the board are occupied, and no user wins. Also, the program does not prevent a user from overwriting another user’s previous position. Make the necessary changes to correct these two oversights.
#include <iostream>
using namespace std;
void FillArray(char A[3][3]);
void DrawBoard(char A[3][3]);
void UserMove(char A[3][3], int user);
bool GameOver(char A[3][3], int user);
int main(int argc, char **argv)
{
bool flag;
char Array[3][3];
FillArray(Array);
int u = 0;
while (GameOver(Array, u % 2) == false)
{
DrawBoard(Array);
UserMove(Array, u % 2);
u++;
}
return 0;
}
void FillArray(char A[3][3])
{
for (int i = 0; i<3; i++)
{
for (int j = 0; j<3; j++)
A[i][j] = '*';
}
}
void DrawBoard(char A[3][3])
{
for (int i = 0; i<3; i++)
{
cout << " --- --- --- ";
for (int j = 0; j<3; j++)
cout << "| " << A[i][j] << " ";
cout << "| ";
}
cout << " --- --- --- ";
}
void UserMove(char A[3][3], int user)
{
int X, Y;
cout << "Where would you like to place your character?" << endl;
cin >> X >> Y;
if (user == 0)
A[X][Y] = 'X';
else
A[X][Y] = 'O';
}
bool GameOver(char A[3][3], int user)
{
bool flag = 0;
for (int i = 0; i < 3; i++)
{
if ((A[i][0] == A[i][1]) && (A[i][2] == A[i][1]) && (A[i][0] != '*'))
{
if (user == 0)
cout << "User A wins!" << endl;
else if (user == 1)
cout << "User B wins!" << endl;
flag = true;
}
}
for (int j = 0; j < 3; j++)
{
if ((A[0][j] == A[1][j]) && (A[2][j] == A[1][j]) && (A[0][j] != '*'))
{
if (user == 0)
cout << "User A wins!" << endl;
else if (user == 1)
cout << "User B wins!" << endl;
flag = true;
}
}
if ((((A[0][0] == A[1][1]) && (A[1][1] == A[2][2])) || ((A[0][2] == A[1][1]) && (A[1][1] == A[2][0]))) && (A[1][1] != '*'))
{
if (user == 0)
cout << "User A wins!" << endl;
else if (user == 1)
cout << "User B wins!" << endl;
flag = true;
}
return flag;
}
Explanation / Answer
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
#include <iostream>
using namespace std;
void drawBoard(string position[3][3])
{
cout << " 0 1 2 ";
cout << " | | ";
cout << "0 " << position[0][0] << " | " << position[0][1] << " | " << position[0][2] << " ";
cout << " ____|____|____ ";
cout << " | | ";
cout << "1 " << position[1][0] << " | " << position[1][1] << " | " << position[1][2] << " ";
cout << " ____|____|____ ";
cout << " | | ";
cout << "2 " << position[2][0] << " | " << position[2][1] << " | " << position[2][2] << " ";
cout << " | | ";
}
int checkForWinner (string position[3][3])
{
/// check to see if X won the game
//horizontal
if (position[0][0]=="X" && position[0][1]=="X" && position[0][2]=="X")
return 1;
if (position[1][0]=="X" && position[1][1]=="X" && position[1][2]=="X")
return 1;
if (position[2][0]=="X" && position[2][1]=="X" && position[2][2]=="X")
return 1;
//vertical
if (position[0][0]=="X" && position[1][0]=="X" && position[2][0]=="X")
return 1;
if (position[0][1]=="X" && position[1][1]=="X" && position[2][1]=="X")
return 1;
if (position[0][2]=="X" && position[1][2]=="X" && position[2][2]=="X")
return 1;
//diagonal
if (position[0][0]=="X" && position[1][1]=="X" && position[2][2]=="X")
return 1;
if (position[0][2]=="X" && position[1][1]=="X" && position[2][0]=="X")
return 1;
/// check if O won
//horizontal
if (position[0][0]=="O" && position[0][1]=="O" && position[0][2]=="O")
return 2;
if (position[1][0]=="O" && position[1][1]=="O" && position[1][2]=="O")
return 2;
if (position[2][0]=="O" && position[2][1]=="O" && position[2][2]=="O")
return 2;
// vertical
if (position[0][0]=="O" && position[1][0]=="O" && position[2][0]=="O")
return 2;
if (position[0][1]=="O" && position[1][1]=="O" && position[2][1]=="O")
return 2;
if (position[0][2]=="O" && position[1][2]=="O" && position[2][2]=="O")
return 2;
// diagonal
if (position[0][0]=="O" && position[1][1]=="O" && position[2][2]=="O")
return 2;
if (position[0][2]=="O" && position[1][1]=="O" && position[2][0]=="O")
return 2;
}
bool checkForTie ( string position[3][3])
{
bool tie;
int non_empty;
non_empty=0;
for (int i=0; i<3; i++)
{
for (int j=0; j<3; j++)
{
if (position[i][j]!=" ")
{
non_empty++;
}
}
}
if (non_empty==9)
{
tie=true;
}
else
{
tie=false;
}
return tie;
}
int main()
{
bool winner;
int win_check;
bool tie_check;
string position [3][3];
for (int i=0; i<3; i++)
{
for (int j=0; j<3; j++)
{
position[i][j]=" ";
}
}
drawBoard(position);
do
{
int i;
int j;
cout<<"Player 1, your move. ";
cout<<"Row? ";
cin>>i;
cout<<"Column? ";
cin>>j;
position[i][j]="X";
drawBoard(position);
win_check=checkForWinner(position);
if (win_check==1)
{
winner=true;
cout<<"We have a WINNER. Player 1 WON! ";
}
else
{
winner=false;
}
tie_check=checkForTie(position);
if (tie_check==true)
{
cout<<"It's a TIE.";
}
cout<<"Player 2, your move. ";
cout<<"Row?";
cin>>i;
cout<<"Column? ";
cin>>j;
position[i][j]="O";
drawBoard(position);
win_check=checkForWinner(position);
if (win_check==2)
{
winner=true;
cout<<"We have a WINNER. Player 2 WON! ";
}
else
{
winner=false;
}
tie_check=checkForTie(position);
if (tie_check==true)
{
cout<<"It's a TIE.";
}
} while (winner!=true && tie_check!=true);
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
#include <iostream>
using namespace std;
void drawBoard(string position[3][3])
{
cout << " 0 1 2 ";
cout << " | | ";
cout << "0 " << position[0][0] << " | " << position[0][1] << " | " << position[0][2] << " ";
cout << " ____|____|____ ";
cout << " | | ";
cout << "1 " << position[1][0] << " | " << position[1][1] << " | " << position[1][2] << " ";
cout << " ____|____|____ ";
cout << " | | ";
cout << "2 " << position[2][0] << " | " << position[2][1] << " | " << position[2][2] << " ";
cout << " | | ";
}
int checkForWinner (string position[3][3])
{
/// check to see if X won the game
//horizontal
if (position[0][0]=="X" && position[0][1]=="X" && position[0][2]=="X")
return 1;
if (position[1][0]=="X" && position[1][1]=="X" && position[1][2]=="X")
return 1;
if (position[2][0]=="X" && position[2][1]=="X" && position[2][2]=="X")
return 1;
//vertical
if (position[0][0]=="X" && position[1][0]=="X" && position[2][0]=="X")
return 1;
if (position[0][1]=="X" && position[1][1]=="X" && position[2][1]=="X")
return 1;
if (position[0][2]=="X" && position[1][2]=="X" && position[2][2]=="X")
return 1;
//diagonal
if (position[0][0]=="X" && position[1][1]=="X" && position[2][2]=="X")
return 1;
if (position[0][2]=="X" && position[1][1]=="X" && position[2][0]=="X")
return 1;
/// check if O won
//horizontal
if (position[0][0]=="O" && position[0][1]=="O" && position[0][2]=="O")
return 2;
if (position[1][0]=="O" && position[1][1]=="O" && position[1][2]=="O")
return 2;
if (position[2][0]=="O" && position[2][1]=="O" && position[2][2]=="O")
return 2;
// vertical
if (position[0][0]=="O" && position[1][0]=="O" && position[2][0]=="O")
return 2;
if (position[0][1]=="O" && position[1][1]=="O" && position[2][1]=="O")
return 2;
if (position[0][2]=="O" && position[1][2]=="O" && position[2][2]=="O")
return 2;
// diagonal
if (position[0][0]=="O" && position[1][1]=="O" && position[2][2]=="O")
return 2;
if (position[0][2]=="O" && position[1][1]=="O" && position[2][0]=="O")
return 2;
}
bool checkForTie ( string position[3][3])
{
bool tie;
int non_empty;
non_empty=0;
for (int i=0; i<3; i++)
{
for (int j=0; j<3; j++)
{
if (position[i][j]!=" ")
{
non_empty++;
}
}
}
if (non_empty==9)
{
tie=true;
}
else
{
tie=false;
}
return tie;
}
int main()
{
bool winner;
int win_check;
bool tie_check;
string position [3][3];
for (int i=0; i<3; i++)
{
for (int j=0; j<3; j++)
{
position[i][j]=" ";
}
}
drawBoard(position);
do
{
int i;
int j;
cout<<"Player 1, your move. ";
cout<<"Row? ";
cin>>i;
cout<<"Column? ";
cin>>j;
position[i][j]="X";
drawBoard(position);
win_check=checkForWinner(position);
if (win_check==1)
{
winner=true;
cout<<"We have a WINNER. Player 1 WON! ";
}
else
{
winner=false;
}
tie_check=checkForTie(position);
if (tie_check==true)
{
cout<<"It's a TIE.";
}
cout<<"Player 2, your move. ";
cout<<"Row?";
cin>>i;
cout<<"Column? ";
cin>>j;
position[i][j]="O";
drawBoard(position);
win_check=checkForWinner(position);
if (win_check==2)
{
winner=true;
cout<<"We have a WINNER. Player 2 WON! ";
}
else
{
winner=false;
}
tie_check=checkForTie(position);
if (tie_check==true)
{
cout<<"It's a TIE.";
}
} while (winner!=true && tie_check!=true);
}
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.