Question

我的csv文件看起来像这样：

爱丽丝，女孩，19，美容

艾力,, 30，冷

现在如上例所示，第二个条目中有两个逗号。现在我在c中使用以下说明来读取csv并将其存储在数据结构中＆＃39;数据＆＃39;：

fscanf(filename,"%[^,],%[^,],%d, %[^,]", data.name,data.gender,&data.age,data.att);

如何忽略第二个逗号？有什么方法可以写%[^,^,]来容纳2个逗号吗？

任何帮助将不胜感激！谢谢！

Answer 1

使用strsep的示例（省略检查）

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

//Implementation as an example as it is not a standard function
//It is unnecessary when it is usable
char *strsep(char **sp, const char *sep){
    char *p, *s;
    if (sp == NULL || *sp == NULL || **sp == '\0') return NULL;
    s = *sp;
    p = s + strcspn(s, sep);
    if (*p != '\0') *p++ = '\0';
    *sp = p;
    return s;
}

typedef struct data {
    char name[32];
    char gender[8];
    int age;
    char att[96];
} Data;

int main(void){
    const char *filename = "data.csv";
    FILE *fp = fopen(filename, "r");

    Data data;
    char buff[128];
    char *token, *p;

    while(fgets(buff, sizeof(buff), fp)){
        p = buff;
        token = strsep(&p, ",\n");//1st field
        strcpy(data.name, token);
        token = strsep(&p, ",\n");//2nd field
        strcpy(data.gender, token);
        token = strsep(&p, ",\n");//3rd field
        data.age = atoi(token);
        token = strsep(&p, ",\n");//4th field
        strcpy(data.att, token);
        //check print
        printf("DEBUG:\nName:'%s', Gender:'%s', Age:%d, Attribute:'%s'\n",
            data.name, data.gender, data.age, data.att);
    }
    fclose(fp);
}

如何使用c删除csv文件的两个逗号

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