#includeint main(){ int num = 0,num1 = 0,num2 = 0,num5 = 0;char arr[3][3] = {' '} for(num = 0;num = 0)){ //输入列好 输入符合这个规定的相反数才运行,停止break;}if(!(arr[num][num1]=='O'|| arr[

#includeint main(){ int num = 0,num1 = 0,num2 = 0,num5 = 0;char arr[3][3] = {' '} for(num = 0;num = 0)){ //输入列好 输入符合这个规定的相反数才运行,停止break;}if(!(arr[num][num1]=='O'|| arr[
#include
int main(){
int num = 0,num1 = 0,num2 = 0,num5 = 0;
char arr[3][3] = {' '}
for(num = 0;num = 0)){ //输入列好 输入符合这个规定的相反数才运行,停止
break;
}
if(!(arr[num][num1]=='O'|| arr[num][num1]=='X')){ //检查这个位置是否已经下过棋子了
break; //下过棋子的话,停止运行
}
else{ //放置棋子
num2 = num2+1;
if(num2 % 2 == 1){
arr[num][num1] = 'O';
}
else(num2 % 2 == 0){
arr[num][num1] = 'X';
}
for(num;num

#includeint main(){ int num = 0,num1 = 0,num2 = 0,num5 = 0;char arr[3][3] = {' '} for(num = 0;num = 0)){ //输入列好 输入符合这个规定的相反数才运行,停止break;}if(!(arr[num][num1]=='O'|| arr[
char arr[3][3] = {' '}后面少了分号吧.还有为什么每个if{ }后面都有个；呢?