Hello World

Rascal syntax is similar to C/C++, but semi-colons (;) and brackets ({}) are not used. Rascal syntax is similar to Python in that white space (indenting) is significant -- this conveys the information the brackets previously did, and it makes Rascal code easier to understand as many people will use similar syntax/layout. Like Ruby, parenthesis are not needed for function calls and 'p' can be used to print (but C syntax is used for string formatting):

 
 int main(): 
     printf ("Hello!\n") 
     return 0 
 

or

 
 int main(): 
     printf "Hello!\n" 
     return 0 
 

or simply

 
 int main(): 
     p "Hello!\n" 
     return 0 
 

NEXT: Specifying build and deployment options