嘗試讀取文本文件時遇到錯誤

Question

好吧，我正在構建一個工作程序，以便每天跟蹤音量，並將音量分割爲每個不同位置接收的音量。大樓內有8條線路。文本文件包含當天的日期，建築物的總體積和每個位置的體積（PEN）。

我現在遇到兩個問題，現在都分離到我的readDay函數。 where result = fscanf（pi-> Date，40，fp）; 的問題是 1.不兼容的整型指針轉換將'int'傳遞給參數類型爲'const char *' 2.不兼容的指針類型將'char [40]'傳遞給'FILE *'類型的參數（又名'struct_sFILE * '）

任何人都可以向我解釋這些問題的含義。或者如果您需要更多信息以幫助我隨時提問。

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

struct Day { 
char Date[40]; 
int Total; 
int Pen1; 
int Pen2; 
int Pen3; 
int Pen4; 
int Pen5; 
int Pen6; 
int Pen7; 
int Pen8; 


}; 

const char fileName [] = "UPS.txt"; 

void StartRecord(void); 
void printDay(struct Day* pi); 
void writeDay(FILE *fp, struct Day *pi); 
int readDay(FILE *fp, struct Day *pi); 
void readFile(void); 
void addDay(void); 



int main(int argc, const char * argv[]) { 

StartRecord(); 

int choice; 
printf("Enter 1 to read this file or enter 2 to add to it."); 
scanf("%d", &choice); 
switch (choice) { 
    case 1: readFile(); 
     break; 
    default: printf("Not a valid choice\n"); 
     break; 
} 
getchar(); 
getchar(); 


} 

void StartRecord(void) { 

int count; 
int i; 
struct Day aDay; 
FILE *fp; 

fp = fopen(fileName, "w"); 
if (fp != NULL) { 
    printf("Enter volume for how many days? "); 
    scanf("%d", &count); 
    for (i = 0; i < count; ++i) { 
     printf("What is today's date? "); 
     gets(aDay.Date); 
     printf("What was the total volume for the building for the day?"); 
     scanf("%d", &aDay.Total); 
     printf("What was the volume for Pen 1? "); 
     scanf("%d", &aDay.Pen1); 
     printf("What was the volume for Pen 2? "); 
     scanf("%d", &aDay.Pen2); 
     printf("What was the volume for Pen 3? "); 
     scanf("%d", &aDay.Pen3); 
     printf("What was the volume for Pen 4? "); 
     scanf("%d", &aDay.Pen4); 
     printf("What was the volume for Pen 5? "); 
     scanf("%d", &aDay.Pen5); 
     printf("What was the volume for Pen 6? "); 
     scanf("%d", &aDay.Pen6); 
     printf("What was the volume for Pen 7? "); 
     scanf("%d", &aDay.Pen7); 
     printf("What was the volume for Pen 8? "); 
     scanf("%d", &aDay.Pen8); 
     getchar(); 
     writeDay(fp, &aDay); 
    } 
    fclose(fp); 
}else { 
    printf("\nError opening file.\n"); 
} 

} 

void readFile(void) { 
FILE *fp; 
struct Day aDay; 

fp = fopen(fileName, "r"); 
if (fp != NULL) { 
    while (readDay(fp, &aDay)) { 
     printDay(&aDay); 
    } 
    fclose(fp); 
} else { 
    printf("\nError opening File!\n"); 
} 
} 

void writeDay(FILE *fp, struct Day *pi) { 
fprintf(fp, "%s\n", pi->Date); 
fprintf(fp, "%d\n", pi->Total); 
fprintf(fp, "%d\n", pi->Pen1); 
fprintf(fp, "%d\n", pi->Pen2); 
fprintf(fp, "%d\n", pi->Pen3); 
fprintf(fp, "%d\n", pi->Pen4); 
fprintf(fp, "%d\n", pi->Pen5); 
fprintf(fp, "%d\n", pi->Pen6); 
fprintf(fp, "%d\n", pi->Pen7); 
fprintf(fp, "%d\n", pi->Pen8); 
} 

int readDay(FILE *fp, struct Day *pi) { 
int result; 

fgetc(fp); // read the endline 
result = fscanf(pi->Date, 40, fp); 
if (result == EOF) { 
    return 0; 
} 
fscanf(fp, "%d", &pi->Total); 
fscanf(fp, "%d", &pi->Pen1); 
return 1; 

} 

void PrintDay(struct Day *pi) { 
printf("Records for the day of: %s\n", pi->Date); 
printf("Total Volume: %d", pi->Total); 
printf("Volume for Pen 1: %d", pi->Pen1); 
printf("Volume for Pen 2: %d", pi->Pen2); 
printf("Volume for Pen 3: %d", pi->Pen3); 
printf("Volume for Pen 4: %d", pi->Pen4); 
printf("Volume for Pen 5: %d", pi->Pen5); 
printf("Volume for Pen 6: %d", pi->Pen6); 
printf("Volume for Pen 7: %d", pi->Pen7); 
printf("Volume for Pen 8: %d", pi->Pen8); 
printf("\n\n"); 

} 

Answer 1

從某種意義上說，你的論點是錯誤的。這：

fscanf(pi->Date, 40, fp); 

應該是：

fscanf(fp, pi->Date, 40); 

就像你已經擁有了它幾行進一步下跌。

從另一種意義上說，你試圖做的事很奇怪 - 你不能將任何東西讀入文字整數中。你可能想要更多的東西一樣：

fscanf(fp, "%s", pi->Date); 

或可能：

fscanf(fp, "%39s", pi->Date); 

或相似。