Question

Can we change a double variable to an int variable?

Answer 1

Yes, we can.
This is an example of how you convert:
int i = 3; // i is 3
double d = (double) i; // d = 3.0

Comments

Is it the same for the other way to int?

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yeah, just switch their places

Answer 2

Yes when a variable type is being changed (while it is legal) it is called casting.

You can cast a variable with the structure of

= () . Read the line above without the <>. To select what you want to cast, you should also put a ( ) around the part you want specifically to be casted.

Answer 3

Yes by casting the variable. You can put (int) in front of the variable