c - 使用文件符号和命令行语句从文件中获取输入并将其保存在另一个文件中，用 C 语言。无法获得输出

Question

我正在编写一个程序，使用文件符号和命令行语句从文件中获取输入，将输入填充到结构中，并将输入保存到另一个文件中。我也有一个排序功能，但我忽略了它，因为我认为它与我的问题无关。这是我第一次使用文件表示法，我无法将任何输出输入到我的输出文件中。关于为什么的任何想法？我已经尝试了一切，但无法让它工作。谢谢您的帮助。

/* structure declaration */
struct personCatalog {
    char name[50];
    char address[50];
    char cityState[50];
    char zipCode[7];
} ;

/* function prototypes */
void getPerson (struct personCatalog *arrayOfPointers[], int maxNumberOfPeople, FILE      *inputFile);

void sortPerson (struct personCatalog *arrayOfPointers[]);

void putPerson(struct personCatalog *arrayOfPointers[], FILE *outputFile);


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

    int maxNumberOfPeople = 51;

    struct personCatalog *pointerArray[maxNumberOfPeople];


    /* add file streaming*/

    FILE *inFile, *outFile;

    inFile = fopen("/Users/myName/Desktop/inputText.txt", "r");

    /* add command line statements */
    if (( inFile = fopen(argv[1], "r")) == NULL) {
        printf("Can't open the input file");
        exit(1);
    }

    getPerson(pointerArray, maxNumberOfPeople, inFile);

    sortPerson(pointerArray);

    outFile = fopen("/Users/myName/Desktop/outputText.txt", "w");

    if ((outFile = fopen(argv[2], "w")) == NULL) {
        printf("Can't open the output file");
        exit(1);
    }

    putPerson(pointerArray, outFile);

    fclose(inFile);
    fclose(outFile);

    return 0;

}

/* function to fill the structures */
void getPerson (struct personCatalog *arrayOfPointers[], int maxNumberOfPeople, FILE *inputFile){
    struct personCatalog *tempPointer;
    int buffer = 512;
    char stringCollector[buffer];
    int num = 0;


    while ((num < maxNumberOfPeople) && (fgets(stringCollector, buffer, inputFile) != NULL) ) {

        /* dynamic memory allocation */
        tempPointer = (struct personCatalog *) malloc(sizeof(struct personCatalog));

        /* filling the structures */
        strcpy(tempPointer->name, stringCollector);
        fgets(tempPointer->address, buffer, inputFile);
        fgets(tempPointer->cityState, buffer, inputFile);
        fgets(tempPointer->zipCode, buffer, inputFile);

        arrayOfPointers[num] = tempPointer;

        num++;
    }

    /* adding a null character to the end of the pointer array */
    arrayOfPointers[num] = '\0';
}

    /* print function */
void putPerson(struct personCatalog *arrayOfPointers[], FILE *outputFile){

    int num = 0;

    while (arrayOfPointers[num] != NULL) {
        printf("------Person #%d------\n", num);
        fputs(arrayOfPointers[num]->name, outputFile);
        fputs(arrayOfPointers[num]->address, outputFile);
        fputs(arrayOfPointers[num]->cityState, outputFile);
        fputs(arrayOfPointers[num]->zipCode, outputFile);

        /* memory free */
        free(arrayOfPointers[num]);

        num++;
    }

}

Answer 1

正确的代码在 main

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

int maxNumberOfPeople = 51;

struct personCatalog *pointerArray[maxNumberOfPeople];


/* add file streaming*/

FILE *inFile, *outFile;

if (argc != 3) {
    printf("Usage: /Users/myName/Library/Developer/Xcode/DerivedData/progarmName-cglrwvyyabrneocwtllxqdhygaaj/Build/Products/Debug/progarmName /Users/myName/Desktop/inputText.txt /Users/myName/Desktop/outputText.txt\n");
    exit(1);
}


/* add command line statements */
if (( inFile = fopen(argv[1], "r")) == NULL) {
    printf("Can't open the input file");
    exit(1);
}

getPerson(pointerArray, maxNumberOfPeople, inFile);

sortPerson(pointerArray);


if ((outFile = fopen(argv[2], "w")) == NULL) {
    printf("Can't open the output file");
    exit(1);
}

putPerson(pointerArray, outFile);

fclose(inFile);
fclose(outFile);

return 0;

}