Question

viet chuong trinh nhap vao tu ban phim so nguyen duong N , tinh tong gia tri chia het cho 3 trong pham vi tu 1 den N , sau do in ra man hinh 

Answer 1

uses crt;

var n,i,t:integer;

begin

clrscr;

write('Nhap n='); readln(n);

t:=0;

for i:=1 to n do 

  if i mod 3=0 then t:=t+i;

writeln(t);

readln;

end.