Uhm đúng rồi, bài của bạn nèk:
Code:
program so_le;
var
n,i:byte;
s:double;
c:string;
begin
repeat
writeln('CHUONG TRINH TINH GIA TRI BIEU THUC');
writeln('-------((1+3)*5+7)*9+...2n+1-------');
writeln;
write('-Nhap so n (n<100): ');
readln(n);
s:=1;
if n=0 then writeln('=> S= 1')
else for i:=1 to n do
begin
if (i mod 2)<>0 then s:=s+(2*i+1)
else s:=s*(2*i+1);
end;
writeln('=> S= ',s:10:2);
write('-Co tiep tuc nua khong (C/K): ');
readln(c);
writeln;
until upcase(c)='K';
writeln('-Nhan Enter de thoat');
readln
end.
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