New Tic Tac Toe program. Only need help with int main function...

can you please explain the return int a little more???? thanks

Code:

#include <stdio.h>
#include <stdlib.h>


void info()
{
    printf("TIC-TAC-TOE\nWritten by MEEEE\n");
    printf("Your Symbol 'x'");
    printf("Computer Symbol 'o'");
}


/*initialize board*/
void init(char cell[])
{
    int i;
    for (i=0; i<9; i++)
        cell[i] = ' ';
}


/*print gameboard */
void gameBoard(char cell[])
{
    printf("\n %c | %c | %c \n", cell[0], cell[1], cell[2]);
    printf("---|---|---\n");
    printf(" %c | %c | %c \n", cell[3], cell[4], cell[5]);
    printf("---|---|---\n");
    printf(" %c | %c | %c \n\n", cell[6], cell[7], cell[8]);
}


/*player moves*/
void userMove(char cell[])
{
    int i = 0;
    int cont = 1;


    do{
        printf("Your Move (0-8): ");
        scanf("%d", &i);


        if((cell[i] != ' ') || (i < 0 || i > 8))
        {
            printf("Invalid Input\n");    //invalid input
        }
        else
        {
            cell[i] = 'x';
            cont--;        //set while loop to false, break
        }
    }
    while(cont);
}




/*computer moves*/
void computerMove(char cell[])
{
    int i = 0;
    int cont = 1;


    do
    {
        if(cell[i] == ' ')
        {
            cell[i] = 'o';
            cont--;
        }
        else
        {
            i++;
        }


    }while(cont);


}


char checkWinner(char cell[])
{
int i;


// Diagonals
if (cell[4]!=0 && (cell[4]==cell[0] && cell[4]==cell[8] || cell[4]==cell[2] && cell[4]==cell[6]))
return cell[4];


// Horizontals
for (i=0; i<9; i+=3)
if (cell[i]>' ' && cell[i]==cell[i+1] && cell[i]==cell[i+2])
return cell[i];


// Verticals
for (i=0; i<3; i++)
if (cell[i]>' ' && cell[i]==cell[i+3] && cell[i]==cell[i+6])
return cell[i];


// No match
return ' ';
}






int main()
{
    char cell[9];
    int cont = 1;
    int ccode = 0;


    info();
    init(cell);
    gameBoard(cell);
    while(cont)
    {
userMove(cell);
gameBoard(cell);




//check if user wins
//if user wins, print user won
//and cont-- to exit loop
computerMove(cell);
gameBoard(cell);


checkWinner(cell);


//check if computer wins, print computer won
//and cont-- to exit loop
//if nobody won get another user input
      }


    return 0;
}

return stops the current function on that line, and returns back to whatever function called it; optionally returning a value to that function.

Code:

int foo( void )
{
    return 3; /* send 3 back to main */
}

int main( void )
{
    int x;
    x = foo();
}

Quzah.

i was actually talking to the other guy since he's actually more helpful.

Well it's a good thing C cares about who explains it, because it would make no sense for a language to have set rules that anyone could explain to you.


Quzah.

Could you guide me into how to get the checkWinner to actually do its job during the game? It is not working as of now....

Code:

int checkWinner(cell)
{
//Do all your checks
//if you found out someone won,
//check if that cell is an 'x' or an 'o'
//if it's an 'x' return 1
//if it's an 'o' return 2
//if no one won, return 0;
 }

Then in your main if return is 1, print user wins, if return is 2, computer wins, if return is 0 get another move.

How do you check a winner on paper? Check each column. Check each row. Check each diagonal. Don't try to do the whole thing at once. Do one. Check one column for a winner. Then figure out how to do that for each column. Then do the same thing for the other two. Don't worry about the entire thing at once. Just do one column, or one row, or one diagonal. Then work up from there.


Quzah.

do you think you could just give that one to me pleaaaase....it's so late I don't really know anymore.......