preset counter variable in a for loop
Namal
sotis22 at mail.ru
Fri Feb 28 13:16:43 UTC 2020
On Friday, 28 February 2020 at 12:48:17 UTC, mipri wrote:
> On Friday, 28 February 2020 at 12:44:52 UTC, Namal wrote:
>> Hello,
>>
>> I don't understand why this simple code causes a compiler
>> error..
>>
>> import std.stdio;
>>
>> void main(){
>>
>> int b = 0;
>>
>> for (b; b<3; b++){
>> writeln(b);
>> }
>> }
>>
>> $Error: b has no effect
>
> Well, that's the error. b has no effect, so there's
> no need for it, and it's likely written in error. It
> has no effect in C++ either, and you may get a warning:
>
> example.cc: In function 'int main()':
> example.cc:7:8: warning: statement has no effect
> [-Wunused-value]
> for (b; b<3; b++){
Thanks, I didn't know that you don't need it there and can leave
it out!
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