Small question... - Printable Version

Small question... - Printable Version

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Small question... - zDivine - 03.11.2012

When doing something like this:

pawn Код:

for(new i = 0; i < BLAH; i++)

Does it make a difference if you do this:

pawn Код:

for(new i = 0; i < BLAH; ++i)

Re: Small question... - Drake_Lopez - 03.11.2012

The first one is wrong, the last one is the working one..

Re: Small question... - zDivine - 03.11.2012

Quote:

Originally Posted by Drake_Lopez

The first one is wrong, the last one is the working one..

Incorrect. Because I've always used 'i++' and it works fine. I just recently saw someone use ++i and didn't know if it made a difference.

Re: Small question... - TheArcher - 03.11.2012

Here's the results:

Код:

[21:46:20]  Increase of i++ 0 using <
[21:46:20]  Increase of i++ 1 using <
[21:46:20]  Increase of i++ 2 using <
[21:46:20]  Increase of i++ 3 using <
[21:46:20]  Increase of i++ 4 using <
[21:46:20]  Increase of ++i 0 using <
[21:46:20]  Increase of ++i 1 using <
[21:46:20]  Increase of ++i 2 using <
[21:46:20]  Increase of ++i 3 using <
[21:46:20]  Increase of ++i 4 using <
[21:46:20]  Increase of ++i 0 using !=
[21:46:20]  Increase of ++i 1 using !=
[21:46:20]  Increase of ++i 2 using !=
[21:46:20]  Increase of ++i 3 using !=
[21:46:20]  Increase of ++i 4 using !=
[21:46:20]  Increase of i++ 0 using !=
[21:46:20]  Increase of i++ 1 using !=
[21:46:20]  Increase of i++ 2 using !=
[21:46:20]  Increase of i++ 3 using !=
[21:46:20]  Increase of i++ 4 using !=

using

pawn Код:

main()
{
    for(new i = 0; i < 5; i++) printf(" Increase of i++ %d using <", i);
    for(new i = 0; i < 5; ++i) printf(" Increase of ++i %d using <", i);
    for(new i = 0; i != 5; ++i) printf(" Increase of ++i %d using !=", i);
    for(new i = 0; i != 5; i++) printf(" Increase of i++ %d using !=", i);
    for(new i = 0; i > 5; i++) printf(" Increase of i++ %d using  >", i);
    for(new i = 0; i > 5; ++i) printf(" Increase of ++i %d using  >", i);
}

I saw a topic where ****** said that makes no difference in PAWN but he does

Код:

for(new i = 0; i != 5; ++i)

because in C++ is faster.

Edit: That was an example, I know that I've assigned the wrong variable its acctualy int in C

Re: Small question... - Vince - 03.11.2012

Either version works in for loops. There's no difference whatsoever. The difference becomes clear when you start using this in other structures. For example:

pawn Код:

new i = 1;
printf("%d", someArray[++i]);

Will access index 2. i is incremented first.

pawn Код:

new i = 1;
printf("%d", someArray[i++]);

Will access index 1. i is incremented afterwards.