(iii) running the first Ruby program

puts"Hello World"
puts("Ni hao Shijie")# The parentheses behind the method inRuby do not write, and the puts method acts like the printf method .
  a   " Hello "
  puts    a 
 B  =3 
   C  =2 
 puts    b  +   c 
   Puts    a  +  b  #行8: Numbers and strings cannot be added, numeric types are not automatically converted to string types implicitly like Java        

Line eighth (: 8) numbers and strings cannot be added, click the blue font to jump to the error line 8

Implicit implicit

The error is that the Fixnum number type is not implicitly converted to a string type (type error), and the Fixnum type is explained in the Basic Data Type column.

(iii) running the first Ruby program