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

//function
void show1(int a1[]);
void show2(int * a1);
void show3(string a1[]);
void show4(string * a1);
string * show5(string a1[]);
string * show6(string * a1);

int main(int argc, char** argv) {
	//1.整數陣列，傳遞陣列參數（1） 
	int age1[] = {20,19,20,21};
	show1(age1); 
	
	//2.整數陣列，傳遞陣列參數（1） 
	cout<<endl;
	int * age2 = new int[4];
	age2[0] = 20;
	age2[1] = 19;
	age2[2] = 20;
	age2[3] = 21;
	show1(age2); 
	
	//3.字串陣列，傳遞陣列參數（1） 
	cout<<endl;
	string name1[] = {"tom","john","mike","jane"};
	show3(name1);
	
	
	//4.字串陣列，傳遞陣列參數（2） 	
	string * name2 = new string[4];
	name2[0] = "tom";
	name2[1] = "john";
	name2[2] = "mike";
	name2[3] = "jane";
	cout<<endl;
	show4(name2);
	
	//5.字串陣列，傳回陣列參數（1） 
	cout<<endl;
	string name5[] = {"tom","john","mike","jane"};
	string * name52 = new string[4];
	name52 = show5(name5);	
	for(int i=0;i<4;i++)cout<<name52[i]<<endl;
	
	//6.字串陣列，傳回陣列參數（2） 
	cout<<endl;	
	string * name6 = new string[4];
	name6[0] = "tom";
	name6[1] = "john";
	name6[2] = "mike";
	name6[3] = "jane";
	string * name62 = new string[4];
	name62 = show6(name6);	
	for(int i=0;i<4;i++)cout<<name62[i]<<endl;
	
			
	return 0;
}
/////////////////////////////////////
void show1(int a1[])
{
	int len =  sizeof(a1)/sizeof(int);
	cout<<"len = "<<len<<endl;
	for(int i=0;i<len;i++)cout<<a1[i]<<endl;
} 
/////////////////////////////////////
void show2(int * a1)
{
	int len =  sizeof(a1)/sizeof(int);
	cout<<"len = "<<len<<endl;
	for(int i=0;i<len;i++)cout<<a1[i]<<endl;
} 
/////////////////////////////////////
void show3(string a1[])
{
//無法計算len 
//	int len = sizeof(a1)/sizeof(string);
//	cout<<"len = "<<len<<endl;
	for(int i=0;i<4;i++)cout<<a1[i]<<endl;
}
/////////////////////////////////////
void show4(string * a1)
{
//無法計算len 
//	int len = sizeof(a1)/sizeof(string);
//	cout<<"len = "<<len<<endl;
	for(int i=0;i<4;i++)cout<<a1[i]<<endl;
}
///////////////////
string * show5(string a1[])
{
	for(int i=0;i<4;i++)
		a1[i] = a1[i] + "_123";
	return a1;		
}
///////////////////
string * show6(string * a1)
{
	for(int i=0;i<4;i++)
		a1[i] = a1[i] + "_567";
	return a1;		
}