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Print mark conditional

hello everybody this is on Anya and welcome back to the next lecture on conditional statements in the last lecture we studied about if-else conditional statements and in this lecture we'll be covering the topic if-else conditional statements so today will be understanding the if Elif and else conditional statements we can use a various conditional statements here and make this decisions accordingly let's get started the syntax is very simple it's pretty much the same like if-else statements you just get another Elif keyword here using the Elif keyword you give another condition that you want and give the statements you want to run accordingly okay let's have a pictorial explanation of it so that y'all can understand better okay let's say ice cream is equal to butterscotch okay now if ice cream is equal to equal to butterscotch then it is okay it's not that great let's print it accordingly else if ice cream is equal to equal to chocolate then I love it else I don't like it I don't like any other flavor so you see here you could give three conditions that and you could print your statements accordingly okay so let's look into a example we shall do run this on Eclipse and see what outputs we get what we want to do is we shall take the number number input from the user ranging from 1 to 7 and we shall print the day of the week accordingly so for example if number is equal to 1 then we shall print sunday number is 2 then Monday otherwise we shall directly print Saturday let's try this now let's create a new file if Ellis and okay let's take our input let's put it in de is equal to int input of enter a number between one to seven to get the corresponding weekday all right now that we have taken the input let's start using if and Elif so if de is equal to equal to one print Sunday now Elif look carefully Elif sorry I made a mistake here there shouldn't be any brackets okay so L if de is equal to equal to two will say print Monday Ellis des is equal to equal to three brackets again print deels day just continue doing this copy-paste so that you save a little bit of time your might wonder that this is so long this is almost a 15 line code isn't there any shortcut to this method well in case you're thinking about this you are absolutely on the right track we do have a very short and crisp way to do this exact code and let me tell you it gets over in just three lines I promise you it's just three lines but it we won't be doing it in this lecture we shall be doing it at the end of the conditional statement session and it's called switch statements okay this entire 15 line code gets over in just three lines it's as magical as that you can just fast-forward this because you don't want to sit and see someone typing weekdays it it will basically waste your time so you could just fast-forward it to where we get to see the output okay okay we have print Saturday and let's just directly say now else or if the user gives 8 then it's going to be a problem now this air this problem also gets fixed using switch statements we shall be looking into that later LF de is equal to equal to 7 let's say print did I miss something Sunday Monday Tuesday Wednesday Thursday Friday Saturday okay one two three four there that's what I've gone wrong that six seven one two three four five six okay and now let us say else that is if the user gives any other number rather than one to seven we'll say else print enter a number only between one to seven okay let's run this now okay let's enter the number six okay we got Friday our code is correct now let's give a wrong number let us say zero okay we have got the warning here enter a number only between one to seven okay very simple now let me just comment this so that we can go ahead with the next code now our next code is basically about printing the grade depending on what percentage you have got so what we'll be doing here is we'll take the marks of three subjects from the user now each subject is out of 100 so our total is going to be 300 and we'll calculate the percentage out of it and store it in a variable called perc now accordingly if percentage is greater than equal to 90 will give grade oh that is outstanding now L if percentages between 80 and 90 will give grade a and so on okay now we shall go on till grade 60 to 70 C so let's see how we go about it okay so first what we need to do is take input of three subjects let's say sub 1 is equal to int input off enter the marks for subject one okay let's do the same thing for subject 2 and subject 3 remember to change the variables if you're just copy-pasting otherwise you're gonna get errors or rather you'll get the wrong output okay now let's take a variable total is equal to subject 1 plus subject 2 plus subject 3 okay we have our total that the student got now we need to divide this by 300 okay and multiplied by 100 to get the percentage so let's say percentage is equal to total let's put it in black parentheses so that it becomes very clear 300 and this multiplied by hundred okay let's just run it and see what we get so that we are sure about what our results should be and the marks for subject one let's get 50 next let us give it as 70 and then 90 okay I have to print percentage 50 1790 okay 70% okay this is the correct answer just check it out in case you all do not agree all right so let's remove this we don't want to print percentage right now now let's start with our F and L saved conditions so if percentage is greater than equal to 90 I wanted to print great Oh y'all can make many most varied statements such as excellent you all have got outstanding great keep it up and all that in case you want to have fun with it okay go ahead no problem at all now let's say Elif Elif percentage oh sorry this is not the way we comment so Elif per percentage is let will take this time greater than equal to 80 okay and percentage is less than equal to 90 okay now if you all have seen my previous operators lecture y'all will know why am i using and here because I want both these statements to be true and only then should the print statement get executed otherwise no even if only one is true then no okay so we will say print because obviously the percentage has to be between some certain great number right so this the point of only one parameter being true and the other one being false doesn't really come here okay so print grade-a now let's just speeding up so that so now we shall give your 70 and 80 and we'll change it to grade B this will be 60 and 70 so we basically ranging within tense okay this is great see now let's take 50 to 60 we'll be great D after we have Grady we will just consider that as failed because below anything below 40 should be considered as failed okay we have 40 50 this will be great e now we'll just directly give an else statement and say print you have failed okay this was quite long but pretty pretty useful and understanding the proper usage of the Elif statement okay we shall make it much shorter using the switch statements later on let's run this and see now let's give a previous marks only so Accord so it should come between sixty and seventy right so we should be getting a great see let's see if it works we are given 50 70 and 90 okay oh we got a great be here let's check okay okay this is happening because I have given the equal to sign here also this is my problem see this is how you get to know about your logical errors okay so you either remove the equal to sign here like either the former or the latter percentage equal to sign should be removed let's remove it in the latter part that is all the RHS of the LF statements so ninety greater than equal to ninety but this should be greater than let's just remove this it should work then then then our answer is correct that is we get grade B according to greater than equal to seventy okay let's just remove all this all right it should be anyway the answer here is correct according to this code now the answer is correct let's give some other marks and see let's give 20 30 and 15 so it should give us you have failed okay let's give 20 30 and 15 okay see we get you have failed okay so this is all about Elif statements if-else and Elif I hope you all have understood I hope you all had a little bit of fun and I'll meet you all again next time with nested if statements with this is a little vast and a little more complicated it deals with a lot of logic ok you it's very good in developing logic for coding all right bye bye see I'll see you next time