I’m new to Delphi so I apologize for the banality of my question.
How can I write in Delphi a for loop with two counters like this in C++:
int i, j;
for (i=0, j=0; j<100; i++, j++) {
//do something
}
Thanks
You have to “unroll” the loop like this:
VAR I := 0;
FOR VAR J:=0 TO 99 DO BEGIN
// Do Something
INC(I)
END;
1
In Delphi, a for loop can have only exactly one counter, and it can only step by 1. (It can, however, step either upwards, using to, or downwards, using downto.)
The other two loop constructs in the Delphi language are repeat and while.
With repeat, your example could be written like this:
i := 0;
j := 0;
repeat
// Do something
Inc(i);
Inc(j);
until j = 100;
With while, it could look like this:
i := 0;
j := 0;
while j < 100 do
begin
// Do something
Inc(i);
Inc(j);
end;
4