C语言实现解析csv格式文件的示例代码

#include <stdio.h>
#include <stdlib.h>
#include "stdint.h"
#include "string.h"

#define PATH_CSV    "./test.csv"

int parse_csv(uint8_t *path);

int main()
{
    int ret = 0;

    ret = parse_csv(PATH_CSV);

    printf("Hello world! %d\n", ret);

    system("pause");
    return 0;
}

int parse_csv(uint8_t *path)
{
    FILE *fp = fopen(path, "rw");
    uint8_t buf[200];
    char *token = NULL;
    char arr[5][100];
    int line = 0;
    int i = 0;
    int idx = 0;

    if(fp == NULL)
    {
        printf("file open failed: %s\n", path);
        return -1;
    }

    while(fgets(buf, sizeof(buf)/sizeof(buf[0]), fp) != NULL)  //每次读取一行，最多读取200字节
    {
        token = strtok(buf, ",");   //对读取的一行数据进行分割
        while(token != NULL)        //依次取出分割后的内容
        {
            strcpy(arr[idx], token);
            idx++;
            token = strtok(NULL, ",");
        }
        line++;

        printf("line %d: \n", line);
        for(i = 0; i < idx; i++)
        {
            printf("arr[%d]=%s\n", i, arr[i]);
        }
        idx = 0;
        memset(buf, 0, sizeof(buf)/sizeof(buf[0]));
    }

    fclose(fp);

    return 0;
}