Weird Behaviour in R if else Statement

I'm quit new to R programming. While I was trying to write my first if else statement I came across a weird behaviour which I don't understand.

When I run below code:

x = 4;
y=4;
        if (x==y) {
      print('they are equal');
    } else {
      print('they are not equal');
    }

I get no error and I get the expected output. However when I change the indentation of the same exact code as below:

if(x==y){print('they are equal');}
else{print('they are not equal');}  

I get an error message saying that 'Error: unexpected 'else' in "else"'.

So does this means that R is an indentation sensitive language like Python?