Char passing argument in c

debugcn Published at Dev

tath

Im writing a game in c and i want to change player in every step. So i create i function to do this.

struct Node{
    char player[4];
    int cubesRemaining;
    struct Node *left;
    struct Node *right;
};

char *switchPlayer(struct Node *n){
    if (strcmp(n->player, "MAX") == 0){
        strcpy(n->player, "MIN");
        return (n->player);
    }
    else{
        strcpy(n->player, "MAX");
        return (n->player);
    }
}

Now i want to build the game tree and i create another function using recursion. Im also using the switchplayer function but im getting an error message.Here is my code:

struct Node *buildGameTree(int ncubes, char *player){
    struct Node *cube = calloc(1, sizeof(struct Node));
    cube->cubesRemaining = ncubes;
    strcpy(cube->player, player);

    if (cube->cubesRemaining >= 1){
        cube->left = buildGameTree(ncubes - 1, switchPlayer(cube->player));
    }
    if (cube->cubesRemaining >= M){
        cube->right = buildGameTree(ncubes - K, switchPlayer(cube->player));
    }

    return (cube);
}

The error message is: Warning passing argument 1 of switchplayer from incompatible pointer type

Eric Renouf

You define switchplayer to take a struct Node* type, but you're passing cube->player which is a char *; therefore, you are passing an incompatible pointer type.

You probably want to just pass cube and not cube->player as in

cube->left = buildGameTree(ncubes -1, switchPlayer(cube));

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Please contact [email protected] to delete if infringement.

edited at2021-07-8

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