#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
	//purpose:一維陣列的記憶體配置, 陣列長度與迴圈
	int age[] = {20, 21, 19, 22, 20};
	
	//1.如何知道age陣列的長度大小
	//基本上，c++語言：沒有計算 陣列的長度大小的函數，勉強可以用sizeof來計算 
	int len=0;
	len = sizeof(age)/sizeof(int);
	cout<<"ge陣列的長度大小 = "<<len<<endl;
	cout<<endl;
	
	//2.陣列與迴圈
	cout<<"輸入5位學生的成績 = ";
	int score[5];
	for(int i=0;i<=4;i++) 
	{
		cin>>score[i];
	}
	cout<<endl;
	
	cout<<"顯示全部學生的成績 = ";
	for(int i=0;i<=4;i++) 
	{
		cout<<score[i]<<", ";
	}
	cout<<endl;
	cout<<endl;
	
	cout<<"顯示最高分是 = ";
	int max=0;
	for(int i=0;i<=4;i++)
	{
		if(score[i] > max)max=score[i];
	}
	cout<<max<<endl;
	cout<<endl;
	
	cout<<"計算平均分數是 = ";
	int sum1=0;
	for(int i=0;i<=4;i++)
	{
		sum1 +=score[i];
	}
	cout<<sum1/5<<endl;
	cout<<endl;
	
	cout<<"分數排序，由大到小是 = ";
	int temp=0;
	for(int i=0;i<=4;i++)
	{
		for(int j=i+1;j<=4;j++) 
		{
			if(score[i]<score[j])
			{
				temp = score[i];
				score[i] = score[j];
				score[j] = temp;
			}
		}
		
	}
	
	for(int i=0;i<=4;i++) 
	{
		cout<<score[i]<<", ";
	}
	cout<<endl;
	
	return 0;
}