%?Call?var（xflagdim）?with?as?many?of?those?args?as?are?present.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%本程序在基本文件操作的基礎(chǔ)上實(shí)現(xiàn)了更強(qiáng)的錯誤處理功能，可以直接對%%%
%文本進(jìn)行操作。
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


function?std3（）
%UNtitleD?Summary?of?this?function?goes?here
%???Detailed?explanation?goes?here


stu=struct（‘id‘{cell（12）}‘math‘{cell（12）}‘Eng‘{cell（12）}‘phy‘{cell（12）}‘a(chǎn)ve‘{cell（12）}‘sum‘[]）;
stustr=struct（‘id‘{cell（12）}‘math‘{cell（12）}‘Eng‘{cell（12）}‘phy‘{cell（12）}‘a(chǎn)ve‘{cell（12）}‘sum‘{}）;
stupai=struct（‘id‘{cell（12）}‘math‘{cell（12）}‘Eng‘{cell（12）}‘phy‘{cell（12）}‘a(chǎn)ve‘{cell（12）}‘sum‘[]）;
while?1

fid?=?fopen（‘stud1.txt‘?‘a(chǎn)+‘）;???????????
fclose（fid）;????
????
fid?=?fopen（‘stud1.txt‘‘r‘）;
m5?=?fscanf（fid‘%c‘）;
numel（m5）;
fclose（fid）;
if?numel（m5）==0?
fid?=?fopen（‘stud1.txt‘?‘w‘）;???????????
fprintf（fid?‘??????學(xué)號???數(shù)學(xué)（??等級?）???英語（??等級?）???物理（??等級?）???平均分（??等級?）???總分?????????????姓名\n‘）;
%新增的等級允許用7個字符格式
fclose（fid）;
fid2?=?fopen（‘stud1.txt‘?‘r‘）;
m5?=?fscanf（fid2‘%c‘）;
fclose（fid2）;
end;???
numel（m5）;
length=numel（m5）-78;
row=ceil（length/102）;
m6=char（linspace（4848row*102+78））;??%測試點(diǎn)1
for?n01=1:numel（m5）
m6（n01）=m5（n01）;
end
clear?m5;
%?????m6???%測試點(diǎn)
if?row>0
???for?n0=1:row
???????%格式為10+5（9）+8（9）+8（9）+9（11）+8+15+1（回車）=102
???????mao11=（n0-1）*102+78+1;????%?運(yùn)用‘錨’鏈接的思想找到每個單元的起始錨點(diǎn)%學(xué)號
???????stu（n0）.id{11}=uint32（str2double（m6（mao11:mao11+9）））;???????
???????mao12=（n0-1）*102+78+87;%姓名
???????stu（n0）.id{12}=m6（mao12:mao12+14）;
???????mao21=mao11+10;%數(shù)學(xué)
???????mao22=mao21+5;
???????stu（n0）.math{11}=uint32（str2double（m6（mao21:mao21+4）））;
%????????stu（n0）.math{12}=m6（mao22:mao22+6）;
???????mao31=mao22+9;%英語
???????mao32=mao31+8;
???????stu（n0）.Eng{11}=uint32（str2double（m6（mao31:mao31+7）））;
%????????stu（n0）.Eng{12}=m6（mao32:mao32+6）;???????
???????mao41=mao32+9;%物理
%????????mao42=mao41+7;
???????stu（n0）.phy{11}=uint32（str2double（m6（mao41:mao41+7）））;
%????????stu（n0）.phy{12}=m6（mao42:mao42+6）;
%????????stu（n0）???%程序測試點(diǎn)2
???????stu（n0）=jisuan（stun0）;
???????mysav（stunumel（stu））;%保存信息
%?????????stu
???end
%????stu
%????whos?stu;
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%以上實(shí)現(xiàn)了從文本中讀取數(shù)據(jù)并進(jìn)行格式轉(zhuǎn)換，再放入結(jié)構(gòu)體變量stu中
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%?b=size（stu）;

row1=row;
a=input（‘請選擇：|1?查看信息?|2?新增信息??|3?修改信息??|4?刪除信息?|0?退出??：‘）;

if?a==1
%查看信息
row2=row;
if?row>0
?c=numel（stu）;??%測試點(diǎn)3?
a1=1;
while?a1?~=0
????a1=input（‘查詢?請選擇：|0?返回?|1?按學(xué)號查詢?|2?全部輸出?|3?按總成績排名輸出|4?圖表輸出：‘）;
%??????stu????%程序測試點(diǎn)4
????if?numel（a1）==0
????????fprintf（‘輸入錯誤！\n‘）;
????????break;
????end
????if?a1==4
????????draws（stu）;
????end
????
????if?a1==1
????????a12=input（‘輸入學(xué)號：‘）;
????????times=0;??
????????fprintf（‘**************成績查詢結(jié)果--按學(xué)號查詢***********************************************************************\n‘）;
????????fprintf（?‘??????學(xué)號???數(shù)學(xué)（??等級?）???英語（??等級?