Program al;
var a,b:integer;
s:real;
begin
writeln('a=');
readln(a);
writeln('b=');
readln(b);
s:=(a*b)/2;
writeln('s=',s);
readln;
end.
___________________________
Program al;
var x,y,s,r1,r2,p:integer;
c1,c2:real;
begin
writeln('x=');
readln(x);
writeln('y=');
readln(y);
s:=x+y;
p:=x*y;
r1:=x-y;
r2:=y-x;
c1:=x/y;
c2:=y/x;
writeln('s=',s,' p=',p,' r1=',r1,' r2=',r2,' c1=',c1,' c2=',c2);
readln;
end.
____________________
Program al;
var s,n:integer;
begin
writeln('s');
readln(s);
writeln('n');
readln(n);
writeln('sredniaia zagrujennosti celoveka=',s/n,' ciasov');
readln;
end.
_______________________________________!!!