Precedence and Associativity of Operators

[@sdk28]

Relational > Equality operator: -> a c -> (a c) -> ((a c) (Associativity left-right) -> ((10 30) -> ((1)) == (1) -> 1 (true) True block will execute and TRUE will be printed

[@FireUpBITSPILANI]

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[@jsmphompho8052]

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[@tayyab.sheikh]

I also did the same but in my mind!

[@hello_pi]

Sir i am a cse student.... C is the 1st language for a cse student... I never forget you in my life

[@purushothamchembeti8606]

ans: True if(ac) given now have same precedence and their associativity is from left to right. initially ac also gives so now 1==1 which is true. == has low precedence compared to relational operators like >,>=,

[@awsomeindia1295]

How does ac also....plz reply I really need to know!!!!!!!!!!!!

[@vishaliravichandran1314]

@@awsomeindia1295 a

[@awsomeindia1295]

@@vishaliravichandran1314 thank u so much for explaining this😄😄

[@rudraenterprises9005]

​@@awsomeindia1295 sun if some thing is true it return 1

[@adhitya946]

In if condition it is true == true right??

[@rahilumar3002]

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[@Mytechielife]

As relational operator has higher precedence a c turns to 1. Therefore 1==1. Hence true will be printed because if block will get executed.

[@Prakhar_Choubey]

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[@ChintanDhokai]

a).True if(ac) given Now have the same precedence and their associativity is from left to right. Initially, ac also gives so now 1==1 which is true. == has low precedence compared to logical operators like >,>=,

[@nagashayanreddy7237]

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[@1minwithtech495]

Did you appear for gate bro?

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[@renukadeviamalapurapu5662]

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[@adi54113]

Assignment answer is: true(as 1030 is also true and both cases are compared with equality operator so it is true.)

[@hemalakshmi9044]

a=10 , b=20 , c=30 , d=40 ; ( a c) Explanation : (10 30) Here first ...10

[@maheshtech3241]

Thanks for answering...it helped me to understand ❤️🤝

[@sulthanamalick9308]

Sir please compelete the C programming series it will be useful for our placements....please sir. Your video are really good.Thank you so much sir..

[@rubitadas9382]

you are great sir (: the way you are clear all concepts is awesome please upload more computer science subjects so that we people will helpful.

[@crypto_key_unlocked]

Thanks!

[@rikkalarakeshreddy6466]

very nice channel for learning each concept and logics in C programming. #include #define x printf("THANK U SO MUCH NESO ACADEMY") int main() { x; return 0; }

[@compangit1524]

Comments for myself: Associativity is order of evaluation when expressions have the same precedence, could be left-to-right or vice versa. Postfix increment/decrement has greater precendence than prefix. Associativity of postfix operator is from left to right, while prefix is from right to left. Only the assignment, conditional, and unary operators have an associativity of right to left. Associativity only works of we have more than ONE operators of same precedence. If only one, the behavior is undefined and output is compiler dependent. For the assignment, the output is TRUE

[@nforme7826]

a30] which is true ac True==true So, output is true😊

[@sasmitasahoo572]

Is it correct ??????

[@vallipravallikaalluri]

Tq so much i gone theough many websites but this is the 1 which fastly understand and went into my mind 😊😊

[@7Strigiformes]

Thanks a lot sir for these types of great videos...

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[@Atharhashmisir]

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[@suryas1616]

(ac) presedence:2 == Presidence:3 Answer: true

[@ka7126]

Thank you so much, bro, you explain this so well; I'm set for success in my class moving forward

[@AshishKumar-uw9xp]

Hello sir , I don't know u ll see my comment or not but u r god for the students who have eager to learn c language .

[@namita6577]

Ans will be true because having same precedence but due to left to right associativity . Here, ac also results 1 and then == will execute which prints true.

[@varunsamrutwar1966]

the ans is true , explanation :- if(ac) { cout

[@chakradharthota1100]

Thank u bro or explanation

[@mohamedkhawaga8067]

as per ac a belongs to so precednce applies (ac) in this case we have only one operator == so there is no need to apply associativity

[@krutarthpatel6537]

Neso is best 👍

[@APstudent-y6s]

16:10 and the answer comes out to be True thanks Neso❤

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[@fun2shh899]

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[@rishabhchakraborty2628]

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[@natnaellegesse1881]

(2+3)*5 =25 it is correct and it is called distributive property of multiplication over addition, 5*2+5*3=25 ✔️

[@sukhbeersingh5811]

The output of the homework problem is TRUE.👍

[@Xardas_]

Since the

[@AbdElrahmanAmirMohamed]

i can't know how can i thank you great content ..... thank you very much 💙💙💙💙💙💙

[@vikramsingh-jb1xt]

Don't know, because (a c) is also true and return non zero. And finally if(non zero == non zero) sometimes equal or not equal. Therefore I can't predict the answer all times. So it may be compiler dependent.

[@fuzailmohamed8619]

No it is not the case, when a given condition becomes true it returns 1,when it is false it returns 0, here 1==1 true is printed.

[@prashant1206]

but in relational operator(==) non zero value is taken as true so, true(any non zero value)== true , so result is true..

[@accessdenied9393]

int main(void) { int a=10, b=20, c=30, d=40; int expr = (a c); printf("%s", expr ? "true" : "false"); return 0; } In this example "true" get printed out. Because, "" operators take precedence over "==" operator, so both "" evaluated first then "==" operator: (10 30) Both (10 30) return true, which it is represented by 1 (or any non-zero), so the expression expanded like that: (1 == 1) Now because of (1 == 1) returns true (non-zero), "true" get printed, otherwise "false" keyword would have been printed.

[@lets___explore]

Ans is true....i understand the concept very well☺..thakiieeww soo mch...

[@samamostafa2299]

1. we have a condition expression --> (a c) 2. Relational precedence is higher than equality precedence therefore, . 'b' belong to '' operator ---> (d > c), which return TRUE . according to Associativity order Left to Right: (a C) 3. finally Equality will be evaluated (1 == 1), therefore the if construct will return TRUE

[@brotherinterest6912]

so what happen in the last question is that (ac). so there are 2 relational operator and 1 equality operator or u can say (a relational operator b equality operator d relational operator c). so relationall operator has higher precedence and it goes from left to right then (1030), 1030 that s also true (1) then 1==1 true == true that s also true, so TRUE

[@princeyaduvanshi9519]

Very well understood everything. Thanks you sir 🤗🤗

[@hello_pi]

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[@maneeshachandel8493]

Thank you so much sir...you defined it with..minute details

[@shubhammahajan6696]

one video in 2 day means syllabus finish before gate 2019 we can expect with you thanks

[@zeezoscode6954]

The answer for the question is True. Thanks for the great explanation 😍😍

[@apnakaamkaro2644]

Thankyou For these Lectures Sir :)

[@saraiahd]

if(ac) in this expression left to right associativity is there a30 now 1==40 returns false means 0 now 0>30 returns true means 1 if(1) means true so TRUE will be the answer

[@awsomeindia1295]

Thank you so so so so so much sir....really helpful and detailed video

[@sanketkumar29]

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[@sahasrababy_]

Answer is True. Because ,d>c is true that is 1 and a

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[@realgamerz5575]

home works answer is true thank u so much to give such a great content free of cost

[@MohitK96]

everyone underestimates precedence and associativity without knowing that they are the most important topics...

[@waverache8296]

Right

[@tawseeftaher4446]

mohit,vai... i can't memotize this associativity & precedence table. Please help me, if possible

[@hello_pi]

@@tawseeftaher4446 practice bro... Do practice

[@qwertyuiopasdfghjkl4211]

Output is true, because relation operater will return only true or false, here will perform because it is left to right associative both are returning true and both == same.

[@nandinichaudhari4513]

Very nice explanation, my all doubts get clear.

[@deepakbhardwaj3141]

U r awesome Sir doing a great job....

[@sohamshinde1258]

I just dont understand how the brains of the people who have disliked the vedio work, really I don't just get it. May be undertanding them is more complicated than C language.

[@hanivarsitha2505]

Superb explanation 👍

[@bhargavchowdary45]

ans=true; #include int main() { int a=10,b=20,c=30,d=40; if (a c) { printf("true"); } else { printf("false"); } return 0; }

[@kishanchaurasia2909]

Sir I have a doubt. Could you explain the reason for such behaviour. #include int main() { int a=10; int b= ++a + a++; printf("%d ",b); return 0; } Output : 23 But expected answer is 22 because first postfix will be evaluated then prefix and sum and at last assignment b= 12+10 Sir please explain this.

[@nitishaagrawal8629]

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[@mauryaashish1865]

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[@deepeshsunuwar1086]

the answer is TRUE. BECAUSE the relational operators has more precedence than equality operators, so (ac), here same precedence so associativity is from left to right, hence both returns true which means 1==1 and it is also true so the final O/P is; T R U E.....................................

[@swathik3491]

ac gives true and true = = true so its print True

[@andlurimunireddy4622]

Ans is true.because in relational operators priority is ,=,==,=! . so according to this priority ans is considered as true

[@khushiverma894]

At 11:52, in 3rd statement there are 2 operators of same precedence i.e. () nd consist higher precedence than + then associativity should be left to right and hence fun1() should be called first then why it is unpredictable...I don't know if it's silly bt I didn't get it.....plz explain

[@SandhyaSingh-ms6br]

See that statement very carefully, there are only two operators, () and +. There are two occurences of () but overall there are only two operators to work with, i.e, () and + Associativity comes into picture when there are two or more than two operators of SAME PRECEDENCE. By two ore more operators, it simply means two are more different operators of same precedence. Please make a note of this that two or more *different* operators but of same precedence, then associativity will decide which will be evaluated first. Do you get it now? And it's not silly, actually first look pe ye misconception hona is okay, ho jata hai

[@khushiverma894]

@@SandhyaSingh-ms6br yeah got it...thanks😊

[@AbstractZeroData]

if we consider () paranthesis as an operator then there is more than one operator in the expression fun1() + fun2()

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[@Steeve.smoker]

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[@nishithbaravkar7549]

thanks for this wonderful video

[@criminalcoder6307]

True.. As relational operators have higher precedence than equality operator.

[@suryatomar1997]

sir in expression (2+3)*5 ,we must have to solve bracket first then the multiplication should be done, isn't it?

[@Tara_Sutar]

@ 14:28 example, Why is Neso Academy bring printed ? 1) variable "a " is an type. 2) The function is returning only 1 not Neso. and why does it return Neso ?

[@382_alamin8]

So much attractive content thanks for it. Ans. True

[@neerajnegi1447]

In the first example if fun is variable with value assigned to it as 0 then if the expression is like this " int var = fun++" then why the value of var becomes 0 as ++ has higher precedence than = so var should have the value of 1.

[@nimisharawat9949]

Just apply BODMAS or BODMASModulus in calculations.

[@1minwithtech495]

No it won't be true

[@payalkumari3825]

Explain various operators with its precedence in c. Explain various operators in c. Sir this two questions are same or different

[@adriancardosa2448]

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[@nesoacademy]

Thank you :)

[@adriancardosa2448]

I just solved my assignment sir it really helps a lot promise

[@SsSs-nr2nt]

good initiative

[@njaliShinde]

If condition is true True==True that is 1==1 o/p:True

[@josuegisber8150]

Answer is: TRUE. Why? Because relational operator ( < , >, >=,

[@unknown-kn4uf]

@3:48 associativity of * is more than / you only told. Then why here you are saying that associativity of / is more than *

[@AbbaJi-gm4vc]

See again

[@adeebalam2392]

@@AbbaJi-gm4vc can you please explain I have the same doubt

[@mahalingpreethi1021]

Ans:True ac is true which results 1; but 1==1 is True; so ans is True

[@Official-tk3nc]

Guys they are providing everything for free and some idots dislikes these types of videos. I think they need mental treatment

[@manishsuthar597]

They probably would be jealous teachers😟😕

[@nihalpandey5675]

Bro you have just commented same thing in almost each lectures I have gone through. By the way those who r disliking may be having more knowledge but if you have more knowledge what the hell r u doing here😂

[@sspsuman]

() has Left to Right associativity. So why not first fun1() then fun2() will execute always ??

[@mr.knight8967]

No man, When both have same precedence, Compiler work left to right so fun1() will execute first.

[@duggirambabu7792]

@@mr.knight8967 int a, b, c=3; a = b = c; Have same precedence. *It goes from Right to Left,* not Left to Right.

[@ashishkhari5565]

True is the answer of the homework problem................

[@abd8114]

What will be the value of x if. Int x = 5 > 8 ? 10 : 1 != 2

[@Tony-cw6om]

I think 30 would be assigned to x

[@duggirambabu7792]

x = 5 > 8 ? 10 : 1 != 2 < 5 ? 20 : 30 x = 0 ? 10 : 1 != 1 ? 20 : 30 x = 0 ? 10 : 0 ? 20 : 30 x = 0 ? 10 : 30 x = 30

[@smrutiranjanmohanty21]

Excellent

[@Foodfind217]

Answer of the question of this lession: True

[@nandinipogula9726]

Sir there is no video on type conversion techniques 🙁 Plz post that video sir I've been struck over there Wana comp it N also types of type conversion Implicit n explicit

[@shraddhaaasne3915]

sir please make more videos on basic c programming.

[@rishabdas1092]

True as all the parenthesis have same associativity...

[@diojoestar4766]

but we should be able to have a consistent out put for a compiler. example codeblock's GCC compiler should be consistent for every system right? that being said we can make a table with compiler and their behavior.

[@saulaxel]

But the compiler can still change its behavior from version one version to another.

[@manojbasam6732]

Great job sir

[@noone0978]

true will be answer btw sir, do we have to learn the table?

[@universalstarcpu9522]

@4:10 Associativity is from left to right is crct , but in the table of associativity and precedence in the video of arithmetic operators 1st u have written multiplication, division and modulus But at the time mentioned above u did 1st division how is it possible As in the table from gng left to right 1st there is multiplication in table , we should perform multiplication naa 1st🤔 Table is also available after 5 sec of above mentioned time. can anyone clear this ?

[@duggirambabu7792]

**,/,%* have same precedence. Which one does do first? Now it depends on associativity. **,/,%* have same associativity (left to right). So we have to do from left to right. Ex1: 10 / 2 * 5 = 5 * 5 = 25 Ex2: 10 * 2 / 5 = 20 / 5 = 4

[@kishanchaurasia2909]

Sir I have a doubt. int a= 10; int b=10; int c= a+ b+a++; Output : 30 But if we follow precedence then first a++ will be solved and then sum will be solved and answer would be 31 c= 11+10+10 Sir please explain this.

[@badxcode]

are you still here? according to postfix increment which was mentioned before, first the value of 'a' will be use in the equation then it will increment by '1'. so, here value of a = 10 is used in the equation first then after completing the equation and and returning value 30 to 'c', a will increment by 1. a will not increment first and be '11' then get used, it will be used first as '10' then after completing the equation a will increment by 1. print the value of a after the equation of c if that's correct or not. Hope you understood what I wanted to say ..!

[@kishanchaurasia2909]

@@badxcode thanks

[@kishanchaurasia2909]

@@badxcode please explain this one more int a=10; int c=a+a++; Output is 21 Now if I follow what you said then it must 20 only please explain.

[@badxcode]

@@kishanchaurasia2909 quite confusing. According to Neso, rule of postfix in equation is that it will use in equation first then it will increment by 1. (sorry, I talked about completing the equation. I was wrong. Completing the equation comes in light in terms of prefix increment/decrement in equation) You can see the details in video-24 in this playlist, in case you din saw. And with that explanation c=a+a++; seems right. Now about that previous question you asked I guess there's a trick behind that question which I, as a beginner won't be able to find out. I'm just as confused as you are right now. Anyway, if you find the answer, then please don't forget to share it here else I'll crack my head over and over. I hope sir see this problem and reply soon. Or anyone else who figured it out reply here. I guess I'm gonna post this problem on different programming groups in facebook to find out. Anyway, Thanks. You mentioned quite a tricky problem here.

[@Tony-cw6om]

@@kishanchaurasia2909 here in the expression c=a+a++ ...we have two operators one is '+' and another is '++'( postfix increment operator) .a postfix increment operator has higher precedence than the unary plus operator so.. in this expression, C=a+a++ -firstly a++(postfix operator) will be evaluated, in this 1st 10 is assigned to a and then incremented ..as it is incremented the value of a changes to 11 -hence 11 is substituted in place of a which is the left operand so.. 11 is added to 10 hence the output will be 21 I.e , c=11+10 c=21 I hope you understand!!🙃🙃

[@RAHULTMNT100]

great video!

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