sử dụng while...do:
program oken;
uses crt;
var sum:real;
n,i:longint;
a: array[1..1000] of real;
begin
clrscr;
write('nhap so so phan tu cua mang: '); readln(n);
sum:=0; i:=1;
while i<=n do
begin
write('a[',i,']: '); readln(a[i]);
sum:=sum+a[i];
i:=i+1;
end;
writeln('TBC=',sum/n:0:3);
readln;
end.
Sử dụng For...to...do:
program oken;
uses crt;
var sum:real;
n,i:longint;
a: array[1..1000] of real;
begin
clrscr;
write('nhap so so phan tu cua mang: '); readln(n);
sum:=0;
for i:=1 to n do
begin
write('a[',i,']: '); readln(a[i]);
sum:=sum+a[i];
end;
writeln('TBC=',sum/n:0:3);
readln;
end.
