Untitled

do
            {
                       printf("voulez vous arreter la saisie?\n");
                       printf("oui ---> 'o'\n");
                       printf("non ---> 'n'\n");
                       scanf("%c", &y);
                       if (y=='o')
                       {
                                  x=-1;
                       }
                       else if (y=='n')
                       {
                                  x=0;
                       }
                       else
                       {
                                  printf("error\n");
                       }
            }      
            while ((y!='o') || (y!='n'));