//例7.12 將 “a"至”z"的26個英文字母寫入檔案，而後從該檔案中讀取並顯示出來。

#include<iostream>
#include<fstream>
using namespace std;
int test_write(){
	
	ofstream outf("f3.txt",ios::binary);
	
	if(!outf){
		cout<<"Cannot open output file\n";
		exit(1);
	}
	char ch = 'a';
	for(int i=0;i<26;i++){
		outf.put(ch);
		ch++;
	}
	outf.close();
	return 0;
}
int test_read(){
	ifstream inf("f3.txt",ios::binary);
	
	if(!inf){
		cout<<"Cannot open input file\n,";
		exit(1);
	}
	char ch;
	while(inf.get(ch))
	cout<<ch;
	inf.close();
	return 0;
}
int main(){
	cout<<"例7.12 將 \"a\"至\"z\"的26個英文字母寫入檔案，而後從該檔案中讀取並顯示出來。"<<endl;
	cout<<"start"<<endl;

	test_write();
	test_read();

	cout<<endl<<"end"<<endl;
	return 0;
}