CODEWITHSUNDEEP
java
Rayf
Rayf

Reputation: 451

Java make a for loop while creating variables named by the given loop

I'm wondering how I do the following. Make 10 int variables called, var_0, var_1, var_2, etc. All holding 0. I'm picturing something like this...

for(int i=0;i>10;i++){
   int var_i = 0;
}

But of course it doesn't work. How do I make this work without doing every single variable manually?

It's intended for an arbitrary amount of variables.

Upvotes: 0

Views: 107

Answers (4)

Ivan Koblik
Ivan Koblik

Reputation: 4315

It's impossible in Java, there are no macros that would let you do it. Usually if you need 10 variables with same name you just use array.

int vars[] = new vars[10];

It will be initialized to zeroes by default.

If you don't know number of elements in advance you can declare array and construct it later:

int vars[];
...
int numVars = 10;
vars = new int[numVars];

Upvotes: 3

pb2q
pb2q

Reputation: 59607

It's intended for an arbitrary amount of variables.

It sounds like you really want an array of 10 int:

int vars[] = new int[10];

The elements will be initialized to 0. If you need to initialize to something specific, besides zero:

for (int i = 0; i < vars.length; i++)
{
    int vars[i] = 7;
}

You could also declare 10 int, and initialize them in a single statement:

int var1, var2, var3, ...;
var1 = var2 = var3 = ... = 0;

Upvotes: 1

Kumar Vivek Mitra
Kumar Vivek Mitra

Reputation: 33534

Thats not possible, so better go with arrays.....

int[] arr = new int[10];

for(int i=0 ; i<10 ; i++){


      int[0] = 0;

 }

Upvotes: 1

Jigar Joshi
Jigar Joshi

Reputation: 240860

That is not possible, even if it creates it would be local to loop, so why not populate a List there

List<Integer> numbers = new ArrayList<Integer>();
for(int i=0;i>10;i++){
   numbers.add(0);
}

Upvotes: 1

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