package main

import (
	"fmt"
)

func main() {
	//定義一個二維數(shù)組
	var arr = [2][3]int{{1, 4, 3},{7, 5, 6}}

	//方式1. 用for循環(huán)來遍歷
	for i := 0; i  len(arr); i++ {
		for j := 0; j  len(arr[i]); j++ {
			fmt.Printf("%v ",arr[i][j])
		}
		fmt.Println()
	}

	//方式2. for-range 遍歷
	for i, v := range arr {
		for j, v2 := range v {
			fmt.Printf("arr[%v][%v]=%v \t \n", i, j, v2)
		}
		fmt.Println()
	}
}

package main

import (
	"fmt"
)

func main() {
	//1.定義一個二維數(shù)組
	var scores [3][5]float64

	//2.循環(huán)的輸入成績
	for i := 0; i  len(scores); i++ {
		for j := 0; j  len(scores[i]); j++ {
			fmt.Printf("請輸入第%d班的第%d個學生的成績\n", i+1, j+1)
			fmt.Scanln(scores[i][j])
		}
		fmt.Println()
	}

	totalSum := 0.0
	for i := 0; i  len(scores); i++ {
		sum := 0.0
		for j := 0; j  len(scores[i]); j++ {
			sum += scores[i][j]
		}
		totalSum +=sum
		fmt.Printf("第%d班的總分為：%v，平均分為：%v \n",i+1,sum,sum/float64(len(scores[i])))
	}
	fmt.Printf("所有班級的總分為：%v，所有班級的平均分為：%v \n",totalSum,totalSum/15)
}