C语言读取CSV文件 之前是可以输出的，但是突然没有作用了，什么都不会输出，也什么都不报错

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

int main(){
FILE *fp = NULL;
    char *line,*record;
    char buffer[1024];
    if((fp = fopen("menu.csv", "r")) != NULL)
    {
        fseek(fp, 0L, SEEK_SET);  
        char delims[] = ",";
        char *result = NULL;
        int j = 0;
        while ((line = fgets(buffer, sizeof(buffer), fp))!=NULL)
        {
            record = strtok(buffer, ",");
            while (record != NULL)
            {
                if (strcmp(record, "Ps1") == 0)
                    return 0;
                printf("%s ", record);
                if (j == 9)  
                    break;
                record = strtok(NULL, ",");
                j++;
            }
            j = 0;
 
        }
        fclose(fp);
        fp = NULL;
    }

}

看文件是否存在，在文件中非第一行要有Ps1,