lua内蔵関数読み書きファイル

 lua        
--io.open(   ,    )
--     "w"     "r"    "a"    
function writefile_test()
	myfile=io.open("lisaisai.txt","w")	--myfile            
	if myfile==nil then
	print("      ")
	else
	myfile:write(string.format("%s:%s
","--      ",os.date()))
	myfile:write(string.char(10)) --          "
"  
	myfile:write("--11111111111111
")
	myfile:write("--lua      
")
	myfile:write("--lua      
")
	end
 	myfile:close() --    
end

function readfile_test2()
	myfile=io.open("lisaisai.txt","r")	--myfile            
	if myfile==nil then
	print("      ")
	else
	while true do
	line=myfile:read("*l") --           
	print(line)
	if line==nil then
	break
	end
	end
	end --end for 
	myfile:close()
end

function readfile_test1()
	myfile=io.open("lisaisai.txt","r")	--myfile            
	if myfile==nil then
	print("      ")
	else
	for i in myfile:lines() do --  ：        ,               ,      ，   nil,      
print(i)		
		end
	end --end for 
	myfile:close()
end
	writefile_test()
	readfile_test1()
	--readfile_test2()