04. Grades

package main

import "fmt"

func main() {
    var students int
    fmt.Scanln(&students)

    var grade3 = 0.0
    var grade4 = 0.0
    var grade5 = 0.0
    var grade6 = 0.0
    var gradeSum = 0.0

    var grade float64

    for i := 0; i < students; i++ {
        fmt.Scanln(&grade)
        if grade >= 5 {
            grade6++
        } else if grade >= 4 {
            grade5++
        } else if grade >= 3 {
            grade4++
        } else if grade >= 2 {
            grade3++
        }
        gradeSum += grade
    }

    fmt.Printf("Top students: %.2f%%\n", grade6 / float64(students) * 100.0)
    fmt.Printf("Between 4.00 and 4.99: %.2f%%\n", grade5 / float64(students) * 100.0)
    fmt.Printf("Between 3.00 and 3.99: %.2f%%\n", grade4 / float64(students) * 100.0)
    fmt.Printf("Fail: %.2f%%\n", grade3 / float64(students) * 100.0)
    fmt.Printf("Average: %.2f\n", gradeSum / float64(students))
}