為什么在我的輔助函式中取消參考指標變數會導致我的整個程式終止？

我的助手函式 getInput() 將資料讀入陣列串列，直到輸入結束，在那里他們將讀取員工 ID、允許的休假總數和到目前為止休假的天數。它應該回傳通過指標變數 n 讀取的記錄數。但是，當我嘗試取消參考指標時，程式將關閉，我不確定為什么。先感謝您

我的代碼：

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

#define SIZE 80

typedef struct {
    int id; /* staff identifier */
    int totalLeave; /* the total number of days of leave allowed */
    int leaveTaken; /* the number of days of leave taken so far */
}leaveRecord;

// Function Prototypes
void getInput(leaveRecord list[ ], int *n);
int mayTakeLeave(leaveRecord list[ ], int id, int leave, int n);
void printList(leaveRecord list[ ], int n);

int main(){
    int choice, ID, LEAVE, leaveApproval;
    int recordsRead = 0;
    int *ptr = recordsRead;
    leaveRecord list[SIZE];
    do{
        printf("Please Select one of the following Options:\n");
        printf("1: getInput()\n");
        printf("2: mayTakeLeave()\n");
        printf("3: printList()\n");
        printf("4: Quit!!\n");
        scanf("%d", &choice);
        switch(choice){
            case 1:
                getInput(list, recordsRead);
                printf("Temp is %d", recordsRead);
                break;
            case 2:
                printf("Please Enter the Staff ID:\n");
                scanf("%d", &ID);
                printf("Please Enter the Number of Days of Leave:\n");
                scanf("%d", &LEAVE);
                leaveApproval = mayTakeLeave(list,ID,LEAVE, ptr);
                switch(leaveApproval){
                    case -1:
                        printf("Error!! Staff Member not found!");
                        break;
                    case 0:
                        printf("Leave is not approved");
                        break;
                    case 1:
                        printf("Leave is approved");
                        break;
                }
                break;
            case 3:
                break;
        }
    }while (choice < 3);
    return 0;
}

void getInput(leaveRecord list[ ], int *n){
    int option = 0, temp = 0;
    int userInput;
    while (option == 0){
        printf("Please key in the Staff Identifier:\n");
        scanf("%d", &list->id);
        printf("Please key in the Total Number of Days allowed:\n");
        scanf("%d", &list->totalLeave);
        printf("Please key in the Number of Days of Leave taken:\n");
        scanf("%d", &list->leaveTaken);
        printf("Please Key in 1 if you like to stop adding Records:\n");
        scanf("%d", &userInput);
        if(userInput == 1){
            break;
        }
        temp  = 1;
    }
    // Why does dereferencing a Pointer Variable kill the entire program?
    *n = temp;
}
int mayTakeLeave(leaveRecord list[ ], int id, int leave, int n){
    int leaveUsed = (leave   list->leaveTaken);
    for(int i = 0; i < n; i  = 1){
        if(list->id == id){
            if((leaveUsed < list->totalLeave) || (leaveUsed == list->totalLeave)){
                return 1;
            }
            else{
                return 0;
            }
        }
        else{
            return -1;
        }
    }
}


void printList(leaveRecord list[ ], int n){
    for(int i = 0; i < n; i  = 1){
        printf(list);
    }
}

uj5u.com熱心網友回復：

void getInput(leaveRecord list[ ], int *n);

這里，在 getInput 函式中 n 是一個整數型別的指標變數，它需要整數變數的地址。但是在這里， getInput(list, recordsRead)您只是發送讀取的記錄值。

您必須發送記錄讀取的地址。

getInput(list, &recordsRead)

同樣在函式 printList 中，您使用了錯誤的語法。列印輸出（串列）；做這個 ：

printf("%d",list[i]);

或者

printf("%d",*(list i));

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