C プログラムのカスタム スタックに動的メモリを割り当てようとしています。ただし、malloc 呼び出し中にエラー 0xC0000005: アクセス違反の書き込み場所 0x00000014 が表示されます。
これが私の構造体定義と私の関数呼び出しmallocです:
#include <stdio.h>
#include <stdlib.h>
#define EMPTY -1;
typedef enum boolean_tag { TRUE, FALSE } Boolean;
typedef enum direction_tag { ACROSS, DOWN } AnswerDirection; /*The direction of an answer in the crossword*/
typedef struct answer_tag {
/*A single 'Answer' is a single node making up a linked list*/
int answerNumber;
AnswerDirection direction;
char *answerString; /*The answer's value in chars*/
struct answer_tag *nextAnswer; /*Points to the next answer in the linked list*/
} Answer;
typedef struct space_tag {
/*A single space inside of a board*/
int numberOfCurrentAnswers; /*How many Answers currently cross through the space*/
char value;
int x;
int y;
struct space_tag *behindSpace;
struct space_tag *nextSpace;
} Space;
void InitAnswers(Answer *);
Space *InitCrossword();
Space *InitSpace();
void ProgramClosingCleaning(Space *);
main(){
Space *board;
board = InitCrossword();
ProgramClosingCleaning(board);
}
void InitAnswers(Answer *answerKey){
}
Space *InitCrossword(){
int xLimit, yLimit; /*Limits set*/
int xTraverse, yTraverse; /*Coordinate variables to use in traversing*/
Space *currentSpace = NULL;
Space *nextSpace;
printf("Please enter the size of the board: x y\n");
scanf("%d %d", &xLimit, &yLimit);
for (xTraverse = 0; xTraverse < xLimit; xTraverse++){
for (yTraverse = 0; yTraverse < yLimit; yTraverse++){
nextSpace = InitSpace();
nextSpace->x = xTraverse;
nextSpace->y = yTraverse;
nextSpace->numberOfCurrentAnswers = 0;
nextSpace->value = EMPTY;
nextSpace->behindSpace = currentSpace;
currentSpace->nextSpace = nextSpace;
currentSpace = nextSpace;
}
}
while (currentSpace->behindSpace != NULL)
currentSpace = currentSpace->behindSpace;
return currentSpace;
}
Space *InitSpace(){
return (Space *) malloc(sizeof(Space));
}
void ProgramClosingCleaning(Space *currentSpace){
Space *nextSpace;
while (currentSpace != NULL){
nextSpace = currentSpace->nextSpace;
free(currentSpace);
}
}
助けてくれてありがとう!