We can create a string like this:
_a = "Hello World"_
We can find the index as follows:
_position1 = a.index('e') #=> 1_
_position2 = a.index('d') #=> 10_
_position3 = a.index('o') #=> 4_The previous line may be confused because the letter "o" appears twice, in the 4st place and 7st place. So you must know index(char) returns the first ocurrence of the given char.
We can show the contain of the variables:
_puts position1;_
_puts position2;_
_puts position3;_