I have some confusion regarding loops in C#

Hey guys, I'm new to the Unity forums and this is my first thread and I have searched before but I didn't find any answer related to confusion I'm having. So my issue is how can I use loops in unity..

for (int i = 0; i < some value; i++)
{
code goes here;
}

this is a basic structure for using "for" loop can we use it this way : -

Code (CSharp):

1. public class LoopsTesting : MonoBehaviour
2. {
3.     public int speed;           //speed currently 0
4.     public int maxSpeed;        // Random in 60-120
5.  
6.     void Start()
7.     {
8.         // maxSpeed getting random
9.             maxSpeed = Random.Range(60,120);
10.  
11.         // calling coroutine
12.             StartCoroutine(SpeedTest());
13.     }
14.  
15.     // every 0.5 seconds speed incrementing by 5
16.     IEnumerator SpeedTest()
17.     {
18.        for (speed = 0; speed < maxSpeed; speed += 5)
19.         {
20.             yield return new WaitForSeconds(0.5f);
21.             Debug.Log(speed);          
22.         }
23.              
24.     }
25. }

 

Was there an actual question you had or...?

 

Usually you define the variable you are manipulating in the for loop. You failed to mention if your code works or not.

 

I

There is a question clearly I'm asking "can we use for loop in this way or we have to always use for (int i = 0; i <100; i++) or we can use already declared variables inside for loop instead of "i" "

 

Code worked but is this a correct way of doing this using global variables inside for loop parameters instead of "i" keyword?

 

You can use whatever variable you want.

In fact, there is not even a rule that the code you put inside the first and last section of the for loop have anything at all to do with the loop itself. You can put literally any statement you want there. For example this is valid code:

Code (CSharp):

1.             int banana = 0;
2.             for (Debug.Log("Hey"); banana < 6; Debug.Log("How ya doin?")) {
3.                 Debug.Log(banana);
4.                 banana++;
5.             }

If your code works, it is correct. There is no language police that is going to come and stop you.

 

"i" isn't a keyword, it is the name of a variable. Often for loops people just use single letter variable names because they are throw away variables.

Generally in game dev, if the code works and meets your performance and any other requirements you have of it, then it is correct.

 

Thank you so much for your answer I'm new and I'm sorry if Question didn't make sense but i understood it now

 

T

Thank you so much for the quick response and yes sorry about keyword it is actually a variable