C++ 检查数组中的元素是否已被占用
我正在做一个两人的井字游戏,玩家在1-9格中输入一个数字。玩家X使用变量Xp进入所需位置。球员O也会这样做。然而,我不能做一个if语句来检查一个玩家是否进入了一个已经被占据的网格点C++ 检查数组中的元素是否已被占用,c++,arrays,C++,Arrays,我正在做一个两人的井字游戏,玩家在1-9格中输入一个数字。玩家X使用变量Xp进入所需位置。球员O也会这样做。然而,我不能做一个if语句来检查一个玩家是否进入了一个已经被占据的网格点 #include <iostream> using namespace std; void showBoard(char board[], int turn, int Xp, int Op); void winning(char board[]); int main() { int Xp=0,
#include <iostream>
using namespace std;
void showBoard(char board[], int turn, int Xp, int Op);
void winning(char board[]);
int main()
{
int Xp=0, Op=0, turn=0;
char board[9] = {'1','2','3','4','5','6','7','8','9'};
showBoard(board, turn, Xp, Op);
return 0;
}
void showBoard(char board[], int turn, int Xp, int Op)
{
cout << "Please enter a number on the board that is the spot you wish to use" << endl;
cout << "Board:\n";
cout << board[0] << " " << board[1] << " " << board[2] << endl;
cout << board[3] << " " << board[4] << " " << board[5] << endl;
cout << board[6] << " " << board[7] << " " << board[8] << endl;
do
{
for (turn=1; turn<10; turn++)
if (!(turn % 2) == 0)
{
cout << "\nPlayer X's turn." << endl;
cin >> Xp;
if(Xp=Op) //HERE IS THE CHECKER
{
cout << "Spot is taken! Enter new spot: ";
cin >> Xp;
board[Xp-1] = 'X';
}
else
{
board[Xp-1] = 'X';
} //WHERE IT ENDS
cout << "Current Board:\n";
cout << board[0] << " " << board[1] << " " << board[2] << endl;
cout << board[3] << " " << board[4] << " " << board[5] << endl;
cout << board[6] << " " << board[7] << " " << board[8] << endl;
winning(board);
}
else
{
cout << "\nPlayer O's turn." << endl;
cin >> Op;
board[Op-1] = 'O';
cout << "Current Board:\n";
cout << board[0] << " " << board[1] << " " << board[2] << endl;
cout << board[3] << " " << board[4] << " " << board[5] << endl;
cout << board[6] << " " << board[7] << " " << board[8] << endl;
winning(board);
}
}while(turn<10);
cout << "No one won.\n";
return;
}
#包括
使用名称空间std;
无效展示板(字符板[],整数回合,整数Xp,整数Op);
无效获胜(charboard[]);
int main()
{
int Xp=0,Op=0,turn=0;
字符板[9]={'1','2','3','4','5','6','7','8','9'};
展示板(板、回合、Xp、Op);
返回0;
}
无效展示板(字符板[],整数回合,整数Xp,整数Op)
{
无法将所有内容初始化为虚拟值
说
并为Xp和Op选择了一个字符
#define XP_CHAR 'X'
#define OP_CHAR 'O'
在你的支票里,你有吗
if (board[Xp] != DUMMY_CHAR) // Your checker
首先,您正在赋值,而不是检查相等性
其次,Xp==Op
仍然没有任何意义。用o点检查x点?更好的方法是检查正方形是否不是x
或o
:
if(board[Xp - 1] != 'X' || board[Xp - 1] != 'O')
将数组中的所有内容初始化为'0'
,如果它是'0'
,则您知道它尚未被取用。if(Xp=Op)
我很确定这不是你想象的那样。尝试=
另外,尝试对两个玩家使用相同的代码。最重要的提示:启用所有警告,并注意它们:-Wall-Wextra
将其更改为==成功!谢谢
if(board[Xp - 1] != 'X' || board[Xp - 1] != 'O')