var S:integer;
begin
S:=1+2+3+4+5;
Writeln('tong la =',S);
readln
end.
Program Tinh_toan;
uses crt;
var i,n:integer;
S:longint;
begin
For i:=1 to 5 do S:= S+i;
write('tong S = ' , S);
readln
end.
var i,s:integer;
begin
s:=0;
for i:=1 to 5 do
s:=s+i;
writeln(' Tong la: ',s);
readln;
end.