There are not many available resources for refactoring go code. I'm a novice gopher who would appreciate any feedback on a small program which reads a csv file, string converts and parses a few rows in order to perform sub method.

package main

import (
    "encoding/csv"
    "fmt"
    "io"
    "log"
    "os"
    "strconv"
)

const file = "csvdata/csvtest.csv"
// what should stay in main()?  What should be refactored?
func main() {
    f, err := os.Open(file)
    if err != nil {
        log.Fatalf("Error reading all lines: %v", err)
    }
    defer f.Close()

    reader := csv.NewReader(f)
    reader.Comma = ';'

    for {
        record, err := reader.Read()
        if err == io.EOF {
            break
        } else if err != nil {
            log.Print(err)
            os.Exit(-1)
        }
        // need to refactor variables, could I use a type struct?
        var num string = (record[2])
        var name string = (record[3])
        var eia string = (record[5])
        var cia string = (record[6])
        var inc_percent = (record[7])
        var estIncTxn string = (record[8])
        var inc_diff float64
        // I would like to turn this chunk into it's own function
        for i := 0; i < len(record[i]); i++ {
            estInc, err := strconv.ParseFloat(eia, 64)
            actInc, err := strconv.ParseFloat(cia, 64)
            inc_diff = (actInc - estInc)
            if err == nil {
        //How could I turn the following into a template?
                fmt.Println("============================================================\n")
                fmt.Printf("Account: %+s - %+s exceeded the IncAmt by %+v same as $%+v\n", num, name, inc_percent, inc_diff)
                fmt.Printf("over the monthly incoming amount of $%+v. Currently, the declared\n", actInc)
                fmt.Printf("profile is established at $%+v with an expectancy of (%+v).\n", estInc, estIncTxn)
            } else {
                log.Fatalf("Error converting strings: +v", err)
            }

        }
        fmt.Println()
    }
}

Here is a single line of the csv file.

30;4;102033657;COCACOLA;53764;15000.00;73010.58;387%;4;30;650%;15000.00;89558.96;497%;3;5;66%;DDA

Sample of the output:

==============================================================================

Account: 102033657 - COCACOLA exceeded the IncAmt by 387% same as $58010.58 over the monthly incoming amount of $73010.58. Currently, the declared profile is established at $15000 with an expectancy of (4).

==============================================================================

Eventually I would be capturing the outgoing amount as well for each record. Just to give everyone an idea of where I'm going with this. I'm assuming a template would be the best way to approach this situation? How would a Professional approach this code to refactor it? I'm really looking on insight.