我无法修改函数中的变量,所以当它 return 到 main 时,永远不会满足 while 的条件

I can't modify a variable in a function so when it return to the main the condition of while is never satisfied

基本上我想要变量 'End' 来控制 while 循环。在 while 循环中,有一个函数被调用来检查多个事物(是井字游戏)当函数看到三元组或 table 满(平局)时,它应该将变量 'End' 更改为 - 1 如果有人赢了或者 -2 如果是平局所以游戏应该结束。 (这不会发生)


                printf("TURN %u\n", COUNT);      //conta turno (inglese)

                printf("Player %d:\n", Start_Num);      //giocata player1
                printf("ROW: ");
                scanf("%u", &ROW);
                    if (ROW > 2){
                        puts("ENTER A VALID VALUE (BETWEEN 0 AND 2)");  //decisione mossa
                        scanf("%u", &ROW);
                    }
                printf("COLUMN: ");
                scanf("%u", &COLUMN);
                    if (COLUMN > 2){
                        puts("ENTER A VALID VALUE (BETWEEN 0 AND 2)");
                        scanf("%u", &COLUMN);
                    }
                    if (Start_Num == 1){                    //assegnazione mossa all'array
                        TABLE[ROW][COLUMN] = P1_SIGN;
                         }
                    else {  
                        TABLE[ROW][COLUMN] = P2_SIGN;
                    }

                Print_Table_Full(TABLE);        //funzioni
                Verify_Win_Or_Tie(TABLE, P1_SIGN, P2_SIGN, End, Counter_Obj);
                


                    COUNT++;
            } 

while 循环不完整,但它应该可以正常工作



    if(TABLE[0][0] && TABLE[0][1] && TABLE[0][2] == P1_SIGN){   //prima riga
                puts("PLAYER 1 WINS\n");  
                End = -1;                                //valore di vincita
    }
    if(TABLE[0][0] && TABLE[0][1] && TABLE[0][2] == P2_SIGN){
                puts("PLAYER 2 WINS\n");
                End = -1;
    }

     if(TABLE[1][0] && TABLE[1][1] && TABLE[1][2] == P1_SIGN){   //seconda riga
                puts("PLAYER 1 WINS\n");   
                End = -1; 
    }
    if(TABLE[1][0] && TABLE[1][1] && TABLE[1][2] == P2_SIGN){
                puts("PLAYER 2 WINS\n");
                End = -1;
    }

     if(TABLE[2][0] && TABLE[2][1] && TABLE[2][2] == P1_SIGN){   //terza riga
                puts("PLAYER 1 WINS\n");
                End = -1;    
    }
    if(TABLE[2][0] && TABLE[2][1] && TABLE[2][2] == P2_SIGN){
                puts("PLAYER 2 WINS\n");
                End = -1;
    }

    if(TABLE[0][0] && TABLE[1][0] && TABLE[2][0] == P1_SIGN){   //prima colonna
                puts("PLAYER 1 WINS\n");  
                End = -1; 
    }
    if(TABLE[0][0] && TABLE[1][0] && TABLE[2][0] == P2_SIGN){
                puts("PLAYER 2 WINS\n");
                End = -1;
    }

     if(TABLE[0][1] && TABLE[1][1] && TABLE[2][1] == P1_SIGN){   //seconda colonna
                puts("PLAYER 1 WINS\n");  
                End = -1;  
    }
    if(TABLE[0][1] && TABLE[1][1] && TABLE[2][1] == P2_SIGN){
                puts("PLAYER 2 WINS\n");
                End = -1;
    }

     if(TABLE[0][2] && TABLE[1][2] && TABLE[2][2] == P1_SIGN){   //terza colonna
                puts("PLAYER 1 WINS\n"); 
                End = -1;
    }
    if(TABLE[0][2] && TABLE[1][2] && TABLE[2][2] == P2_SIGN){
                puts("PLAYER 2 WINS\n");
                End = -1;
    }


    if(TABLE[0][0] && TABLE[1][1] && TABLE[2][2] == P1_SIGN){    //diagonale 1 
                puts("PLAYER 1 WINS\n");
                End = -1;
    }

    if(TABLE[0][0] && TABLE[1][1] && TABLE[2][2] == P2_SIGN){
                puts("PLAYER 2 WINS\n");
                End = -1;
    }

    if(TABLE[0][2] && TABLE[1][1] && TABLE[2][0] == P1_SIGN){    //diagonale 2
                puts("PLAYER 1 WINS\n");
                End = -1;
    }

    if(TABLE[0][2] && TABLE[1][1] && TABLE[2][0] == P2_SIGN){
                puts("PLAYER 2 WINS\n");
                End = -1;
    }
    
        for(size_t i = 0; i < 3; i++){
            for(size_t j = 0; j < 3; j++){
                if(TABLE[i][j] == 'X' || TABLE[i][j] == 'O'){
                       Counter_Obj++;
                }   
               
            }
        }
        
        if (Counter_Obj == 9){
            puts("DRAW!");
            End = -2;
        }

return End;  
}

我什至尝试过使用指针。变量 End 是

int End = 0;

在您的代码中,您应该更改 if 条件:
if(TABLE[0][0] && TABLE[0][1] && TABLE[0][2] == P1_SIGN)
if((TABLE[0][0] == P1_SIGN) && (TABLE[0][1] == P1_SIGN) && (TABLE[0][2] == P1_SIGN))

因为 if(TABLE[0][0] && TABLE[0][1] && TABLE[0][2] == P1_SIGN) 被评估为
(TABLE[0][0] != 0) && (TABLE[0][1] != 0) && (TABLE[0][2] == P1_SIGN)

正如有人在评论中指出的那样,我不确定您的 if 条件是否符合您的预期。

if(TABLE[0][0] && TABLE[0][1] && TABLE[0][2] == P1_SIGN){   //prima riga
                puts("PLAYER 1 WINS\n");  
                End = -1;                                //valore di vincita
}

例如,目前这段代码正在检查 TABLE[0][0]TABLE[0][1] 是否为 (EDIT:) !=0 以及 TABLE[0][2] 是否等于P1_SIGN。如果这是它应该的工作方式,那很好,无论哪种方式,您都应该按照评论中的建议(@MikeCAT)更改所有 if

另一个重要的事情是你如何使用你的函数。您要返回一个值 (End) 但不会将其存储在任何地方,因此您应该这样做:

int result = Verify_Win_Or_Tie(TABLE, P1_SIGN, P2_SIGN, End, Counter_Obj);

或者,如果您更喜欢使用指针:

/* function now returns void */
void Verify_Win_Or_Tie(char TABLE[][T], char P1_SIGN, char P2_SIGN, int* End, unsigned int Counter_Obj) // now End is a pointer to int
{
    if(TABLE[0][0] && TABLE[0][1] && TABLE[0][2] == P1_SIGN){   //prima riga
                puts("PLAYER 1 WINS\n");  
                // updating pointed value
                *End = -1;                                //valore di vincita
    }

    /* rest of code */
}

如何在main上使用它:

Verify_Win_Or_Tie(TABLE, P1_SIGN, P2_SIGN, &End, Counter_Obj); // passing address of End

看来while循环的条件是错误的!

while(Result != -1) {      //inizio gioco //condizione di vittoria o pareggio

                printf("TURN %u\n", COUNT);      //conta turno (inglese)

                printf("Player %d:\n", Start_Num);      //giocata player1
                printf("ROW: ");
                scanf("%u", &ROW);
                    if (ROW > 2){
                        puts("ENTER A VALID VALUE (BETWEEN 0 AND 2)");  //decisione mossa
                        scanf("%u", &ROW);
                    }
                printf("COLUMN: ");
                scanf("%u", &COLUMN);
                    if (COLUMN > 2){
                        puts("ENTER A VALID VALUE (BETWEEN 0 AND 2)");
                        scanf("%u", &COLUMN);
                    }
                    if (Start_Num == 1){                    //assegnazione mossa all'array
                        TABLE[ROW][COLUMN] = P1_SIGN;
                         }
                    else {  
                        TABLE[ROW][COLUMN] = P2_SIGN;
                    }

                Print_Table_Full(TABLE);        //funzioni
                Result = Verify_Win_Or_Tie(TABLE, P1_SIGN, P2_SIGN, End, Counter_Obj);
                


                    COUNT++;
            } 

while 条件之前是:

while (Result != -1 || Result != -2)

导致无限循环,但我仍然不知道为什么!