program matematika2;
uses crt;
var
w,d:real;
x,y,z:integer;
//w=(x+y-z)/2*x+sqr(y)-x*y*z;
begin
clrscr();
writeln('izracunati formulu');
writeln('w=(x+y-z)/2*x+sqr(y)-x*y*z');
writeln('Unesite promenjive');
write('x=');readln(x);
write('y=');readln(y);
write('z=');readln(z);
d:=2*x+sqr(y)-x*y*z;
if (d<>0) then
begin
writeln('w=(x+y-z)/2*x+sqr(y)-x*y*z=',(x+y-z)/d:10:4);
end
else
begin
writeln('nije dozvoljeno deljenje sa nulom');
end;
readln();
end.
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