（c）これに問題があります。プログラムを実行しようとするたびにクラッシュします。

Question

コンパイラはペールCです。これが助けになるのですが、これは本当に重要です。それは家の口頭でのウォークスルーであることを意味し、プログラムはエラーを特定しませんが、動作させることはできません。

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

#define North 0 
#define East 1 
#define South 2 
#define West 3 

void SetupRooms(); 
void DescribeRoom(unsigned int RN); 
void DescribeExits(unsigned int RN); 
signed int GetDirection(unsigned int RN); 

typedef struct{ 
    char Description[500]; 
    unsigned int Exit[4]; 

}Location; 

Location Room [8]; 

int main(void){ 
    unsigned int Room = 1; 
    signed int Direction; 
    SetupRooms(); 

    while(1){ 
     _clrscr(); 
     DescribeRoom(Room); 
     DescribeExits(Room); 
     Direction = GetDirection(Room); 
     if(Direction == -1){ 
      printf("\n BYE!\n"); 
      exit(0); 
     } 
     if (Direction>0)Room=Direction; 
      else printf("\nSorry you can't go that way...\n"); 
    } 
} 

void SetupRooms(){ 
    strcpy(Room[1].Description, "Welcome to the Simonsen house, come on in!\n"); 
    Room[1].Exit[North]=7; 
    Room[1].Exit[East]=0; 
    Room[1].Exit[South]=0; 
    Room[1].Exit[West]=2; 
    strcpy(Room[2].Description, "You've entered the Hall! Signs of an busy family surround you; a pile of skateboards and an overflowing coat stand. You take off your shoes before continuing.\n"); 
    Room[2].Exit[North]=3; 
    Room[2].Exit[East]=1; 
    Room[2].Exit[South]=0; 
    Room[2].Exit[West]=5; 
    strcpy(Room[3].Description, "Fancy a drink while you're in the kitchen? If you hear a scrabbling noise don’t worry, it’s just Homer the Bearded Dragon.\n"); 
    Room[3].Exit[North]=0; 
    Room[3].Exit[East]=7; 
    Room[3].Exit[South]=2; 
    Room[3].Exit[West]=4; 
    strcpy(Room[4].Description, "So this is the dining room, feel free to play any of the musical instruments\n... or just look at the embarassing childhood photos...\n"); 
    Room[4].Exit[North]=7; 
    Room[4].Exit[East]=3; 
    Room[4].Exit[South]=5; 
    Room[4].Exit[West]=6; 
    strcpy(Room[5].Description, "Welcome to the living room, the centre of the house with its cheerful yellow and blue walls, cream leather corner sofa and hundreds of DVDs. See anything of interest?\n"); 
    Room[5].Exit[North]=4; 
    Room[5].Exit[East]=1; 
    Room[5].Exit[South]=0; 
    Room[5].Exit[West]=0; 
    strcpy(Room[6].Description, "Make sure you don't disturb the person revising! The study is filled with French teaching materials, random cables and liquor...\n"); 
    Room[6].Exit[North]=0; 
    Room[6].Exit[East]=4; 
    Room[6].Exit[South]=8; 
    Room[6].Exit[West]=0; 
    strcpy(Room[7].Description, "You pop on the clogs by the door and explore the garden.\nHow about you have a bounce on the trampoline while you're here?\n"); 
    Room[7].Exit[North]=0; 
    Room[7].Exit[East]=3; 
    Room[7].Exit[South]=4; 
    Room[7].Exit[West]=0; 
    strcpy(Room[8].Description, "The garage light turns on as you walk in and you try not to trip over anything.\n"); 
    Room[8].Exit[North]=6; 
    Room[8].Exit[East]=0; 
    Room[8].Exit[South]=1; 
    Room[8].Exit[West]=0; 
} 

signed int GetDirection(unsigned int RN){ 
int NextRoom = 0; 
unsigned char d; 
printf("Type the first letter of the direction you wish to travel."); 
printf("\nOr type q to quit\n"); 
d = _getch(); 
if (d == 'n') NextRoom = Room[RN].Exit[North]; 
if (d == 'e') NextRoom = Room[RN].Exit[East]; 
if (d == 's') NextRoom = Room[RN].Exit[South]; 
if (d == 'w') NextRoom = Room[RN].Exit[West]; 
if (d == 'q') NextRoom = -1; 

return(NextRoom); 
} 

void DescribeExits(unsigned int RN){ 
    printf("\nExits are available to the: "); 
    if(Room[RN].Exit[North]>0) printf("\n North"); 
    if(Room[RN].Exit[East]>0) printf("\n East"); 
    if(Room[RN].Exit[South]>0) printf("\n South"); 
    if(Room[RN].Exit[West]>0) printf("\n West"); 
} 

void DescribeRoom(unsigned int RN){  
    printf("\n %s", Room[RN].Description); 
} 

Answer 1

Cの配列は0からインデックスされます。配列には8つのメンバーがあると定義されているため、有効なインデックスは0-7です。しかし部屋[8]にアクセスしました。そのような獣ではありませんか？