Hide bombs in a minefield with ASCII 2

Question

Using a two-dimensional matrix, create a program to implement a minefield game. To fill the matrix positions, use random numbers so that 0 represents a free position and 1 represents a pump. The user must be able to make 3 mistakes. Freely chosen positions shall be marked by (ASCII 2); positions with pumps already chosen shall be marked (ASCII 15) and positions not marked shall be marked with (ASCII 63).

How do I hide the positions of the houses with the figures (ASCII 2)?

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define tam 10

int matri[tam][tam];

void forma()
{
    int i, e;
    for(i=0; i<10; i++)
    {
        for(e=0; e<10; e++)
        {
            matri[e][i]= rand()%2;
        }
    }
}

void mostra()
{
    int i, e;
    for(i=0; i<10; i++)
    {
        for(e=0; e<10; e++)
        {
            printf("%3d",matri[e][i]);
        }
        printf("\n");
    }
}
//
void jogar()
{

    int L,C, erros=0;
    char a = 2, b = 15;
    do
    {
        printf("\n\n linha L ?");
        scanf("%d", &L);
        printf("\n\n coluna C ?");
        scanf("%d", &C);

        if(matri[L][C] = 0)
        {
            matri[L][C] = a;
        }
        else if(matri[L][C] = 1)
        {
            erros++;
            matri[L][C] = b;
        }
    }
    while(erros = 3);
}


int main(int argc, char *argv[])
{
    forma();
    mostra();
    esconde();
    jogar();

    return 0;
}

Answer 1

By running its program the matrix has only 0’s and 1’s, but the minefield needs to have the amount of bombs it has next to an empty house, which are at most 8 (had placed wrong) bombs for any index in the middle of the matrix, 5 for the edges and 3 for the corners. The best thing to do is to create an auxiliary matrix indicating that everything is empty, while the user has not yet chosen any home. When he chooses the house you rebuild the matrix taking what is in the position and next to it, if it is a bomb the program ends.

The auxiliary matrix will have the pumps and the quantity of pumps in the houses without pump.

Answer 2

In C, to compare the equality between two integer values it is necessary to use the equal operator ==. You are using the assignment operator = in your comparisons and this will not work as you expect.

To solve your problem, you can create an auxiliary matrix to control the display of your minefield.

The statement talks about a printable ASCII code such as 2 and 15, this is correct ?

If I understand the idea correctly, follow its modified code, commented and tested so that your game is "alive":

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

#define tam 10

#define BOMBA           'B'      /* ASCII 66 (Deveria ser ASCII 15) */
#define LIVRE           '?'      /* ASCII 63 (OK)*/
#define ESCOLHIDA       ' '      /* ASCII 32 (Deveria ser ASCII 2) */

int matri[tam][tam];      /* Mapeamento das bombas  */
int tabuleiro[tam][tam];  /* Tabuleiro somente para exibicao na tela */

void forma()
{
    int i, e;

    srand(time(NULL));     /* O gerador de numeros aleatorios
                             inicializado com uma semente baseada
                             na hora local do computador */
    for(i=0; i<tam; i++)
    {
        for(e=0; e<tam; e++)
        {
            matri[e][i] = rand() % 2;
            tabuleiro[e][i] = LIVRE;    /* Inicializa tabuleiro com celula livre */
        }
    }
}

void mostra()
{
    int i, e;
    for(i=0; i<tam; i++)
    {
        for(e=0; e<tam; e++)
        {
            printf("%3c",tabuleiro[e][i]); /* Exibe tabuleiro */
        }
        printf("\n");
    }
    printf("\n");
}

int vitoria()
{
    int i, e;
    for(i=0; i<tam; i++)
    {
        for(e=0; e<tam; e++)
        {
            if( tabuleiro[e][i] == LIVRE ) /* Verifica se exista alguma celula livre no tabuleiro */
            {
                return 0;
            }
        }
    }
    return 1;  /* Nenhuma celula livre */
}

int jogar()
{
    int L,C, erros=0;

    /* Antes de jogar, inicializa campo minado */
    forma();

    while(1)
    {
        mostra(); /* Exibe tabuleiro a cada rodada */

        printf("Linha? ");
        scanf("%d", &L);
        printf("Coluna? ");
        scanf("%d", &C);

        if(matri[L][C] == 0) /* Celula sem bomba */
        {
            tabuleiro[L][C] = ESCOLHIDA;  /* Ajusta tabuleiro */

            if(vitoria()) /* Verifica Vitoria */
                return 1;   /* Venceu! */
        }
        else if(matri[L][C] == 1) /* Celula com bomba */
        {
            erros++;
            tabuleiro[L][C] = BOMBA;   /* Ajusta Tabuleiro */

            printf("\nBOMBA EXPLODIU! (%d de 3)\n\n", erros );

            if( erros >= 3 ) /* Verifica fim de jogo */
                return 0;   /* Fim de Jogo! */
        }

    }
}


int main(void)
{
    if(jogar())
    {
        printf("Parabens! Voce venceu!\n");
    }
    else
    {
        printf("Voce Perdeu! Game Over!\n");
    }

    return 0;
}