How manage money in go

main.go

// https://golangprojectstructure.com/representing-money-and-currency-go-code/
// Manage in cents (integer)
package main

import "fmt"

func main() {
	var sum float32

	for i := 0; i < 1000000; i++ {
		sum += float32(0.1) * 1.55
	}

	var expectedSum int

	for i := 0; i < 100000; i++ {
		expectedSum += 1 * 155
	}

	fmt.Printf("$ %f\n", sum)		// $ 155919.968750
	fmt.Println("$", expectedSum / 100)	// $ 155000
}