record.txt

关于课件 好多种结构的算法 等等 大家自己看吧

PROGRAM P9_2(input,output);
CONST n=5;
TYPE 
 alfa=string[10];
 student=Record
  NO : integer ;
  Name: alfa;
  Sex: (female,male);
  Age: 15 .. 35 ;
  Score: record
          math:real ;
          English:real ;
          Chinese:real ;
          computer:real ;
          ave:real
         end ;
   END  ;
 class=array[1.. n] of student ;       
PROCEDURE sr(var y:class;n:integer) ;        
  VAR 
  sx,i:integer;       x:student;
 begin
  for i:=1 to n do
   with x,score do
    begin 
     readln(NO);   readln(Name);
     readln(sx);
      if sx=1 then sex:=female else sex:=male ; 
     readln(Age) ;
     readln(math,English,Chinese,computer);
     ave:=(math+English+Chinese+computer)/4;
     y[i]:=x ; 
    end
 end ; 
PROCEDURE px(var y:class;n:integer) ;
  VAR 
   i,j:integer;       x:student;
 begin
  for i:=1 to n-1 do
   with y[i],score do
    for j:=i+1 to n do
      if ave < y[j].score .ave then
        begin
          x:=y[i];  y[i]:=y[j] ;  y[j]:=x
        end ;
 end ; 
PROCEDURE tj(var y:class;n:integer) ;
  VAR  i ,m ,a ,b ,c ,d ,e : integer ;
                p1,p2,p3,p4,p5:real;
 begin a:=0;b:=0;c:=0;d:=0;e:=0 ;
   for i:=1 to n do
    with y[i],score do
    begin
     m:=trunc(ave/10) ;
     case m  of
      9 ,10 : a:=a+1 ;
         8 : b:=b+1 ;
           7 : c:=c+1 ;
           6 : d:=d+1 ;
       else  e:=e+1
     end
    end ;
P1:=trunc(a/n*1000)/10;
Writeln('a=',a,p1,'%');
P2:=trunc(b/n*1000)/10;
Writeln('b=',b,p2,'%');
P3:=trunc(c/n*1000)/10;
Writeln('c=',c,p3,'%');
P4:=trunc(d/n*1000)/10;
Writeln('d=',d,p4,'%');
P5:=trunc(e/n*1000)/10;
Writeln('e=',e,p5,'%');
end;
PROCEDURE sc(var y:class;n:integer) ;
  VAR 
  i:integer;  
 begin
  for i:=1 to n do
   with y[i],score do
     begin 
      write(NO:8);   write(Name:16);
      case sex  of 
         female : write('female':8) ;
        male   : write('male':8) ;
      end ;
      write(Age:6) ;
      writeln(ave:8:2) ;
     end
 end ; 
VAR
s:class;
PROCEDURE sr(s,n);'
PROCEDURE px(s,n);' ..排序过程说明
PROCEDURE tj(s,n);' ..统计过程说明
PROCEDURE sc(s,n);' ..输出过程说明
begin
  sr(s,n); px(s,n); 
  tj(s,n); sc(s,n) 
end .