If var 10 print variable is 10 else print variable is something else end.
Ruby if then else one line.
Executes code if the conditional is true.
Notice ruby uses elsif not else if nor elif.
If j 0 then if j 100 then.
X 10 if x 8 puts x is greater than 8 end.
H ruby abc rb x is greater than 8.
An if expression s conditional is separated from code by the reserved word then a newline or a semicolon.
All in one line.
The simplest form of flow control and logic in ruby is called an if statement or technically speaking in ruby since everything is an expression an if.
Puts 123 if 2 even.
First see a 10 the condition a 10 is comparing a with 10 and if a is greater than 10 then it is true and if smaller then false.
Which is the same as.
The then is optional.
Ruby provides a whole set of i o related methods implemented in the kernel module.
The values false and nil are false and everything else are true.
In the first line we are taking input.
You can also add an else expression.
Puts 123 end this is a shorthand version which can be useful if you have a simple condition.
Database applications advanced php programming perl python java programming javascript programming c c programming ruby programming visual basic view more.
If the conditional is not true code specified in the else clause is executed.
So the whole story is that if a 10 if a is greater than 10 then it will execute puts your number is greater than 10 otherwise it will execute puts your number not greater than 10 end at.
All the i o methods are derived from the class io.
The class io provides all the basic methods such as read write gets puts readline getc and printf.
If else if syntax.
The if then else statement in delphi code beginner delphi developers should watch out for if then else traps.
If construct in one line.
It s possible to write an if statement using just one line of code.
If a 10 here we used if.
Is there an alternative.
One of the most powerful features present in most programming and scripting languages is the ability to change the flow of the program as certain conditions change.
If you have an if else expression there is also a shorthand for that.
If the test expression evaluates to a true then the then expression is evaluated.
This chapter will cover all the basic i o functions available in ruby.
X 10 if x 8 then puts x is greater than 8 end.
The ruby language has a very simple control structure that is easy to read and follow.
These shorthands beautifully consolidate three or more lines of code into one readable line of code.
If var 10 print variable is 10 end.
