package main

import (
    "encoding/csv"
    "os"
)

func main() {
    // 创建文件
    file, err := os.Create("data.csv")
    if err != nil {
        panic(err)
    }
    defer file.Close()

    // 创建CSV写入器
    writer := csv.NewWriter(file)
    defer writer.Flush()

    // 写入表头
    header := []string{"姓名", "年龄", "城市"}
    if err := writer.Write(header); err != nil {
        panic(err)
    }

    // 写入多行数据
    records := [][]string{
        {"张三", "25", "北京"},
        {"李四", "30", "上海"},
        {"王五", "28", "深圳"},
    }
    if err := writer.WriteAll(records); err != nil {
        panic(err)
    }
}

for _, record := range records {
    if err := writer.Write(record); err != nil {
        // 处理每一行写入的错误
        panic(err)
    }
}
// 手动刷新
writer.Flush()
if err := writer.Error(); err != nil {
    panic(err)
}

import "strconv"

age := 30
city := "广州"
row := []string{"赵六", strconv.Itoa(age), city}
writer.Write(row)

type Person struct {
    Name string
    Age  int
    City string
}

people := []Person{
    {"Alice", 26, "杭州"},
    {"Bob", 33, "成都"},
}

for _, p := range people {
    record := []string{p.Name, strconv.Itoa(p.Age), p.City}
    writer.Write(record)
}
writer.Flush()