program Project1;
{$ASSERTIONS ON}
function getProb(aProbability: Integer): boolean;
begin
result := aProbability > (100 - random(100));
end;
procedure miss;
begin
writeln('miss');
end;
procedure hit;
begin
writeln('hit');
end;
var
i, success, probability, errorMarge: Integer;
const
combat: array[boolean] of procedure = (@miss, @hit);
begin
// show that getProb() is reliable
errorMarge := 4;
success := 0;
probability := 80;
for i in [0..99] do
Inc(success, Byte(getProb(probability)));
assert(success >= probability - errorMarge);
success := 0;
probability := 50;
for i in [0..99] do
Inc(success, Byte(getProb(probability)));
assert(success >= probability - errorMarge);
// example usage
combat[getProb(20)];
combat[getProb(80)];
combat[getProb(90)];
readln;
end.