Julia Tutorial - 6. If Statement and Ternary Operator

Key Takeaways

hello and welcome to code Basics coding tutorial today's topic is if statement and Turner operator in Julia if you some programming experience you are already familiar with if statement what it does is it evaluates a condition then executes a certain block of code so for example here I have this variable which I have initialized with a minus value negative value and I want to know if this number is positive number or negative number uh in order to figure out that uh I will use if statement so I will say if x is less than zero then print it is negative else print that is it is positive and remember in Julia to end the if else you have to put and keyword here okay if I execute this this is saying negative it gave me this deprecation warning because of this extra space if I execute again using this play button it will tell me that the number X is negative now if I change this number to a positive number and again execute using the play button and again execute this guy now it is saying it is a positive number uh here uh we are using IF and else which means if it satisfies this condition then it will execute this particular code block otherwise it will execute this line sometimes you might have multiple if condition for example this uh code is not complete you want to check for zero as well in that case you will say else if x greater than zero then print positive so this one is positive number and the last one is else then print zero okay and let me make this one zero so if I execute this again and again this will be zero okay if I make it positive positive it's going to be positive I make it negative it's going to be negative so it's quite simple okay uh now you can do the same thing using a tary operator as well if condition is typically used when you have a bigger block of code to execute here our code is very simple we are checking uh some condition and we're just printing a statement so the same thing I can do you using turn operator so I can say print X less than Z question mark so here the first thing is your condition the second thing is a question mark which means is X less than zero if it is then it means it's a negative number and the SSE condition will be separated using a column so column you will say positive and if you execute this it says it's a negative number if you make it positive it's going to say it's positive inary operator you can write Nary operator so you can enclose this particular condition in a bracket and you can check for zero as well so you will say x is greater than Z if x is greater than Z then it is positive otherwise it is zero so you can do this thing and if you execute right now it is saying positive because my X is a positive number if I make it zero it is going to say it is zero so that was a nice quick introduction on if and tary operator thanks for watching