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TRAFFIC

I live in Vietnam and there are a lot of traffic problems in big cities in my country. Firstly, there are too many people using the roads especially in the rush hour when people run out to work and school or get home from those places. Secondly, there are too many vehicles on the road that leads to traffic jams. Another problem is that many roads are narrow and bumpy. Fourthly, there are traffic accidents every day so a lot of people lose their lives or are injured. So in order to travel on the roads safely, I think we should obey the traffic rules and traffic signs as well. Moreover, carefulness is very necessary.

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- Tiết kiệm những khoản chi cho tiêu thụ điện ở trong gia đình

- Giảm được chi phí cho xây dựng nguồn điện, giảm bớt điện năng phải nhập khẩu, có nhiều điện phục vụ cho sản xuất đời sống

- Với môi trường: Giảm bớt khí thải và chất gây ô nhiễm môi trường.Có tác dụng bảo vệ môi trường

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program dem;

uses crt;

var n,i,j,S: integer;

      a:array[1..100] of integer;

begin

i:=0;

S:=0;

while(readln(n)) do

begin

 if(n:=0) then break;

 i:=i+1;

 a[i]:=n;

end;

for j:=1 to i do 

begin

 if(a[j] mod 2 <> 0) then S:=S+a[j];

end;

write(‘Tong cua cac so le la: ‘,S);

readln;

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https://zicxabooks.com/tinh-chat-vat-ly-hoa-hoc-cua-nuoc.html