Latest C Aptitude Question SOLUTION: main() { int a=10,b; b=(a++)+(a++); a=(b++)+(b++); printf("a=%d and b=%d",a,b); } Options 1) a=43 b=21 2) a=42 b=21 3) a=43 b=23 4) a=44 b=20

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(#M40042832) C Programming question find o/p and how it comes? Keep an EYE

main()
{
int a=10,b;
b=(a++)+(a++);
a=(b++)+(b++);
printf("a=%d and b=%d",a,b);
}

Options
1) a=43 b=21
2) a=42 b=21
3) a=43 b=23
4) a=44 b=20

Asked In C Gauri Korde (9 years ago)

Unsolved Read Solution (48)

Is this Puzzle helpful?   (24)   (3) Submit Your Solution Output

Read Solution (48) :

OLAPU SWATHI  (9 years ago)

ans is a=43,b=21
because b=(a++)+(a++) means a++ is post increment so value of a will remain as 10 for first time t 1hen it will increment by 1 so b=10+11=21
same as b=21+22=43

Is this solution Helpfull? Yes (29) | No (7)  

garv raitani  (9 years ago)

a=43 and b=23

Is this solution Helpfull? Yes (17) | No (3)  

MANISH KUMAR SINGH  (9 years ago)

b=(a++)+(a++) means that 10+10 = 20 will assign in B then A will be increase two times ....after incrementing A become 12 but again a will be override by (b++) + (b++) means 20+20 =40 will assign in A. now B will be increment two times and B become 22.

Is this solution Helpfull? Yes (17) | No (9)  

Gunavathi RP  (9 years ago)

a=21 and b= 43

Is this solution Helpfull? Yes (7) | No (11)  

Anand Mishra  (9 years ago)

b=11+11=22, a=23+23=46

Is this solution Helpfull? Yes (6) | No (8)  

amrutha  (9 years ago)

b=10+10;
now a=12,b=20;
a=20+20;
a=40 b=22;

Is this solution Helpfull? Yes (5) | No (1)  

satish kumar gupta  (9 years ago)

b=23,a=43

Is this solution Helpfull? Yes (4) | No (1)  

Gauri Korde  (9 years ago)

It gives ans as a=40,b=22

Is this solution Helpfull? Yes (3) | No (2)  

jyotsna kumari  (9 years ago)

a=10
b=(a++)+(a++);
=10+11=21 and a=22;
now
a=(b++)+(b++);
=21+22=43 and b=23;
therefore,a=43 and b=23;
because it is postfix operator...value inc after using the presennt value of the variable;

Is this solution Helpfull? Yes (3) | No   

Gayathri  (9 years ago)

b=20
a=40
a++ is incremented in nextline

Is this solution Helpfull? Yes (2) | No (8)  

Vidhi Chandra  (9 years ago)

b=21
a=43
as a++ means ,first the value is used and then gets incremented

Is this solution Helpfull? Yes (2) | No (4)  

anuradha puligoti  (9 years ago)

b=(a++)+(a++)=11+11=22
a=(b++)+(b++)=23+23=46
sooooo b=22 and a=46

Is this solution Helpfull? Yes (2) | No (2)  

DEBOJIT CHATTERJEE  (9 years ago)

b=10+11=21
a=21+22=43
Ans:-
a=43,b=21

Is this solution Helpfull? Yes (2) | No (1)  

arjun  (9 years ago)

A=49
B=23

Is this solution Helpfull? Yes (2) | No   

ASM  (9 years ago)

value of a & b are
a=40, b=22

Is this solution Helpfull? Yes (2) | No (1)  

Sandeep  (9 years ago)

b=23 n a=43

Is this solution Helpfull? Yes (2) | No   

anirudh rajan  (9 years ago)

b=(a++)+(a++)
b=11+12=23
a=(b++)+(b++)
a=24+25=49

Is this solution Helpfull? Yes (1) | No (5)  

anirudh rajan  (9 years ago)

so guys my bad
a++ and ++a
both increment the value of a by one
but in a++
it will return the value before increment
and ++a it will increment the value after increment
therefore answer is 21 and 43

Is this solution Helpfull? Yes (1) | No   

Ruchi  (9 years ago)

b=10+10=20 coz post increment operator(a++) has been used and thus it will increment only after evaluation of the expression thus a=10+1+1=12. Now by overriding a=20+20=40 with the same logic.Now b will become 22.
final result
a=40
b=22

Is this solution Helpfull? Yes (1) | No (1)  

Gauri Korde  (9 years ago)

Guys,try this on ur complr

Is this solution Helpfull? Yes (1) | No (1)  

sanghamitra muduli  (9 years ago)

b=10+11=21
a=21+22+43

Is this solution Helpfull? Yes (1) | No   

Chirag Ranjan Lahiri  (9 years ago)

a=43 and b=23

Is this solution Helpfull? Yes (1) | No   

mayank sharma  (9 years ago)

first a + a assigned to b
so b=20 for now
and b+ b assigned to a so 20 + 20=40
so a== 40 ans.
and now revised b= b++=11
so b= 11 + 11= 22 ans.

Is this solution Helpfull? Yes (1) | No   

Keerthi  (9 years ago)

a=43 and b=21

Is this solution Helpfull? Yes (1) | No   

prashant ranjan  (9 years ago)

b=10+10=20
than
a=b+b=20+20=40
than b=11+11=22

thus
a=40
b=22

Is this solution Helpfull? Yes (1) | No (1)  

Gauri Korde  (9 years ago)

b=(a++)+(a++)
b=11+11=22
a=(b++)+(b++)-?
compiler is giving a = 40 ,how?

Is this solution Helpfull? Yes | No (2)  

Gauri Korde  (9 years ago)

Guys,try this on ur compliler.

Is this solution Helpfull? Yes | No (2)  

vinitha  (9 years ago)

a=43 b=21 because (a++)+(a++) means 10+11 i.e 21 and same as next step

Is this solution Helpfull? Yes | No (1)  

Shalini Sharma  (9 years ago)

Ans. a=40,b=22
b=10+10=20;
a=20+20=40;
after that b increases so
b=22;

Is this solution Helpfull? Yes | No   

jevisetti srinivasarao  (9 years ago)

b=(a++)+(a++); a will be incremented after execution so b=10+10, b=20.and next statement also same as first statement i.e a=20+20,so a=40, and b will be incremented two times i.e b=22
final ans is a=40,b=22

Is this solution Helpfull? Yes | No (1)  

shiva krishna  (9 years ago)

b=22,a=40;
given a=10 tnen
b=(11+11)=22;
a=23+23=46;

Is this solution Helpfull? Yes | No (1)  

jitendra kumar  (9 years ago)

a=40 b=22
here
b=(a++) + (a++)
both are post increment
than b=10+10=20
but memory location 22
after a=40
ans a=40,and b=22

Is this solution Helpfull? Yes | No (1)  

Mukesh jangir  (9 years ago)

a=21,b=43
.
.

Is this solution Helpfull? Yes | No (2)  

Raja  (9 years ago)

b= 23 ; as b++ also used in statement a=(b++)+(b++);
b is incremented to 23
a=21+22=43

Is this solution Helpfull? Yes | No   

Manikanta.P.S  (9 years ago)

a=40
b=22
initailly a was 10 asigned to b with post inc so value increments after adding
so,value of b=20 when incremented in a assignment it becomes 22

Is this solution Helpfull? Yes | No   

Alkashree Jha  (9 years ago)

a=40
b=21
a++ is postincrement so b=20
a=40
then b incremented to 21

Is this solution Helpfull? Yes | No   

vignesh  (9 years ago)

10+11=21
21+22=43
a=43 b=21

Is this solution Helpfull? Yes | No   

brindhavetrivel  (8 years ago)

option a
int a=10,b;
b=10+11=21
a=21+22=43

Is this solution Helpfull? Yes | No   

MATLOOB HUSAIN  (8 years ago)

a=43 and b=23

Is this solution Helpfull? Yes | No   

anjani kumar  (8 years ago)

a=43 ,b=21 bcz a++ this is post increment so first assign the value then after increase the value
here b=(a++)+(a++) a=10 then first 10 assign after that increment the value gives 11 this is is update value again a++ take the update value and assign the value 11 so b=10+11 =21
so same rule use for a=43.

Is this solution Helpfull? Yes | No   

harsh shah  (8 years ago)

b=(a++)+(a++) means that 10+10 = 20 will assign in B
then A will be increase two times ....after incrementing A become 12 but again a will be override by (b++) + (b++) means 20+20 =40 will assign in A.
now B will be increment two times and B become 22.

so final ans A:40 and B:22

Is this solution Helpfull? Yes | No   

Rakhi Modi  (8 years ago)

b=10+11=21
a=21+22=43

Is this solution Helpfull? Yes | No (1)  

Vanitha  (8 years ago)

its solution is 1.......

Is this solution Helpfull? Yes | No   

Neha Saini  (8 years ago)

a=43
b=21
b= 10+11
a=21+22

Is this solution Helpfull? Yes | No (1)  

AYAN BISWAS  (8 years ago)

ans is 3
as (a++)+(a++)= (10)+(11) which is 21 so b is now 21 but a at this time is 12......now the next line (b++)+(b++) = (21)+(22) = 43 so a=43 but b is now 23 at this time..

Is this solution Helpfull? Yes | No   

Balu javangula  (8 years ago)

a=43 b=21
because b=(a++)+(a++) means a++ is post increment so value of a will remain as 10 for first time then it will increment by 1 so b=10+11=21
same as b=21+22=43

Is this solution Helpfull? Yes | No   

vijayalakshmi  (8 years ago)

answer 4
so a=40,b=20

Is this solution Helpfull? Yes | No   

Sanjeev Dubey  (4 years ago)

a=43, b=23
because b=(a++) +(a++) which means a++ is post increment so the value of a is 10 in first, then it will incremented with 1 and becomes 11. therefore 10+11=21 and stores in b.

now b=21, so a=(b++)+(b++), which is also post increment, the value of b is 21 in first and 22 in second and then it will incremented to 23. so the sum would be 21+22=43 which will be stored in a.
the final values of a and b will be 43 and 23 respectively.

Is this solution Helpfull? Yes | No (1)  

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