a matrix not printing correctly in c

Question

I don't know why mat[7][8]='A' prints A in the whole column. The procedure is a game grid where we should put pions of gamers and maintain all their previous pions on the grid. I don't know why changing the value of this matrix outside a for loop doesn't do anything right as it supposed to be.

Here is the code:

#include "Go_1.h" #define DIMENSION 9 #define SPACELEFT 2 /* cette donction permet d'affichier la matrice à l'état initial, de placer le pion du joueur à l'intersection en analysant si la place est vide ou pas, et d'afficher la grille avec les pions des joueurs*/ void grille(char mat[][TAILLE_MATRICE], int *x, int *y,char jeton,char *joueur,char lettres[],char nombres[]) { int a=0; /* servira de compteur pour afficher tous les caracteres de A--I en utilsant le code ASCII*/ int b=1; const int LIGNE_COLONNE=(SPACELEFT-1)*(DIMENSION-1)+ DIMENSION;/* = 25// nb de lignes et colonnes où on doir afficher les valeurs de la matrice stockées dans LIGNE_COLONNE(25) lignes et colonnes*/ printf("\t"); printf(" "); /*2 spaces*/ /*affichage des lettres délimitant le goban horizontalement*/ for(int j=0;j<DIMENSION;j++) { printf("%c", 'A'+a); a++; for (int k=0; k<(2*SPACELEFT-1);k++) { printf(" "); /*5 spaces 5= 2*SPACELEFT-1 */ } } printf("\n"); /*Remplissage de la matrice*/ for (int i=0;i<LIGNE_COLONNE;i+=SPACELEFT) { for (int j=0;j<LIGNE_COLONNE;j+=SPACELEFT) { mat[i][j]='0'; } } mat[7][8]='A'; /*affichage des nombres délimitant le goban verticalement*/ for (int i=0;i<LIGNE_COLONNE;i++) /* LIGNE_COLONNE in this case= 25*/ { printf("\t"); if (i%SPACELEFT==0) { printf("%d ",b); b++; } else printf(" "); for (int j=0; j<LIGNE_COLONNE;j++) { if ((i%SPACELEFT==0)&&(j%SPACELEFT==0)) /* le cas où mat[i][j] est une intersection*/ { /*if (i==*x && j==*y) /*tester si les indices coincident avec ceux choisis par le joueur { if (mat[*x][*y]=='0') /*tester si l'intersection ets vide cad contient '0'* { mat[*x][*y]=jeton; } else { printf("\tLa place est deja occupee!"); choix_pion(joueur,jeton,x,y,lettres,nombres);/*on lui demande de réexprimer son choix où placer son pion break; } } */ printf("%c ",mat[i][j]); } else if ((i%SPACELEFT==0)&&(j%SPACELEFT!=0)) printf("* "); else if ((i%SPACELEFT!=0)&&(j%SPACELEFT!=0)) printf(" "); else if ((i%SPACELEFT!=0)&&(j%SPACELEFT==0)) printf("* "); } printf("\n"); } return; }

Welcome to Stack Overflow. Please read the About and How to Ask pages. More importantly, please provide an minimal reproducible example. It seems likely to me that the problem is in the code outside this function — — Jonathan Leffler
– Jonathan Leffler, Commented Feb 4, 2023 at 18:09

C-Nut · Accepted Answer · 2023-02-04 19:42:09Z

Well, I refactored the code a bit and I get the following output:

A B C D E F G H I

Since I did not know how to define TAILLE_MATRICE I just assigned 64

That's the code for anyone wanting to try it out:

#include<stdio.h> #define DIMENSION 9 #define SPACELEFT 2 #define TAILLE_MATRICE 64 int main(char mat[][TAILLE_MATRICE], int *x, int *y,char jeton,char *joueur,char lettres[],char nombres[]) { int a=0; int b=1; const int LIGNE_COLONNE=(SPACELEFT-1)*(DIMENSION-1)+ DIMENSION; printf("\t"); printf(" "); for(int j=0;j<DIMENSION;j++) { printf("%c", 'A'+a); a++; for (int k=0; k<(2*SPACELEFT-1);k++) { printf(" "); /*5 spaces 5= 2*SPACELEFT-1 */ } } printf("\n"); for (int i=0;i<LIGNE_COLONNE;i+=SPACELEFT) { for (int j=0;j<LIGNE_COLONNE;j+=SPACELEFT) { mat[i][j]='0'; } } mat[7][8]='A'; for (int i=0;i<LIGNE_COLONNE;i++) { printf("\t"); if (i%SPACELEFT==0) { printf("%d ",b); b++; } else printf(" "); for (int j=0; j<LIGNE_COLONNE;j++) { if ((i%SPACELEFT==0)&&(j%SPACELEFT==0)) { printf("%c ",mat[i][j]); } else if ((i%SPACELEFT==0)&&(j%SPACELEFT!=0)) printf("* "); else if ((i%SPACELEFT!=0)&&(j%SPACELEFT!=0)) printf(" "); else if ((i%SPACELEFT!=0)&&(j%SPACELEFT==0)) printf("* "); } printf("\n"); } return 0; }

Collectives™ on Stack Overflow

a matrix not printing correctly in c

1 Answer 1

Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Related