Question

Answer 1

const fi='vao.txt'

fo='dulieu.txt'

var f1,f2:text;

st:string;

d,i,dem:integer;

begin

assign(f1,fi); reset(f1);

assign(f2,fo); rewrite(f2);

readln(f1,st);

while st[1]=#32 do 

  delete(st,1,1);

while st[length(st)]=#32 do 

  delete(st,length(st),1); 

for i:=1 to length(st) do 

 if (st[i]=#32) and (st[i+1]=#32) then delete(st,i,1);

d:=length(st);

dem:=0;

for i:=1 to d do 

  if st[i]=#32 then inc(dem);

writeln(f2,dem+1);

close(f1);

close(f2);

end.