尝试使用 strtok 从文件中分离字符串并存储在结构数组中

Question

我写了下面的代码：

struct customer {
    char name[30]
    int age, phoneNo;
    struct address {
        int houseNumber;
    } homeAddress;
};


void search()
{
    char search[50];
    char record[100];
    const char s[2] = ",";
    char* pStr;
    struct customer c;

    FILE* fPtr;
    fPtr = fopen("customer.txt", "r");
    // flag to check whether record found or not
    int foundRecord = 0;
    printf("Enter name to search : ");
    // fgets gets name to search
    scanf("%s", search);
    //remove the '\n' at the end of string

    while (fgets(record, 100, fPtr))
    {
        // strstr returns start address of substring in case if present
        if (strstr(record, search))
        {
            char* pStr = strtok(record, ",");
            if (pStr != NULL) {
                strcpy(c.name, pStr);
            }
            pStr = strtok(NULL, ",");
            if (pStr != NULL) {
                c.age = atoi(pStr);
            }
            pStr = strtok(NULL, ",");
            if (pStr != NULL) {
                c.phoneNo = atoi(pStr);
            }
            pStr = strtok(NULL, ",");
            if (pStr != NULL) {
                c.homeAddress.houseNumber = atoi(pStr);
            }
            foundRecord = 1;
            printf("Your details: ");
            printf("%s, %d, %d, %d\n", c.name, c.age, c.phoneNo, c.homeAddress.houseNumber);
        }
        if (!foundRecord)
            printf("%s cannot be found\n", search);
    }
    fclose(fPtr);
}

当我在我的 main 中调用 void search 函数时，代码运行不正常（我无法输入任何内容进行搜索，我得到一堆没有意义的符号）。基本上，我有一个名为 customer 的结构，我将其设为一个结构数组，我试图输入客户的详细信息（例如他们的姓名）以搜索他们的详细信息，将其存储到结构数组中并显示它。客户详细信息存储在如下文本文件中：

John Doe,10,123456789,5,Streets,Paris,P,60393
Mary Ann,39,12935837,5,Streetss,Cities,C,48354

我可以知道如何修复我的代码以使其正常工作吗？

Answer 1

要详细说明该函数在没有数组的情况下如何工作，它可能类似于：

void search()
{
    char search[30];  // Match the length of the name in the structure
    char record[100];
    struct customer c;

    FILE* fPtr;
    fPtr = fopen("customer.txt", "r");
    // TODO: Should really check for failure here

    printf("Enter name to search : ");
    scanf(" %29[^\n]", search);  // Read at most 29 characters, plus the string terminator makes 30

    // Read lines from the file
    while (fgets(record, sizeof record, fPtr))
    {
        // strstr returns start address of substring in case if present
        if (strstr(record, search))
        {
            // Found the record we're searching for

            char* pStr = strtok(record, ",");
            if (pStr != NULL) {
                strcpy(c.name, pStr);
            }
            pStr = strtok(NULL, ",");
            if (pStr != NULL) {
                c.age = atoi(pStr);
            }
            pStr = strtok(NULL, ",");
            if (pStr != NULL) {
                c.phoneNo = atoi(pStr);
            }
            pStr = strtok(NULL, ",");
            if (pStr != NULL) {
                c.homeAddress.houseNumber = atoi(pStr);
            }

            printf("Your details: ");
            printf("%s, %d, %d, %d\n", c.name, c.age, c.phoneNo, c.homeAddress.houseNumber);

            // There's no need to read more data from the file
            // So break out of the loop
            break;
        }
    }
    fclose(fPtr);
}

尝试使用 strtok 从文件中分离字符串并存储在结构数组中

Trying to use strtok to separate string from a file and store in structure array

c

struct

structure

void

strtok