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C Programming - Expressions - Discussion

Discussion Forum : Expressions - General Questions (Q.No. 3)
Expressions
3.
Which of the following is the correct usage of conditional operators used in C?
a>b ? c=30 : c=40;
a>b ? c=30;
max = a>b ? a>c?a:c:b>c?b:c
return (a>b)?(a:b)
Answer: Option
Explanation:

Option A: assignment statements are always return in paranthesis in the case of conditional operator. It should be a>b? (c=30):(c=40);

Option B: it is syntatically wrong.

Option D: syntatically wrong, it should be return(a>b ? a:b);

Option C: it uses nested conditional operator, this is logic for finding greatest number out of three numbers.

Discussion:
30 comments Page 1 of 3.
Sivarenjini said:   7 years ago
C option is also wrong.

There must be semicolon at the end. Then only it can be considered as valid.
(3)
Husain said:   5 years ago
A is not the correct answer. It will always generate the error of lvalue required
instead righteous way to write statement A is;
c=a>b?30:40;

Of course, C, the option can also be termed wrong in syntax for not terminating it with a semicolon.
(2)
Heena said:   1 decade ago
max = a>b ? (a>C ? a : c) : (b>c ? b :c);

Now I guess this statement is more clear.
(2)
Mona said:   8 years ago
Option C is also not correct because there is no semi colon in the end of the statement.
(2)
Pankaj said:   5 months ago
Option C does not end with a semicolon. So option A is correct.
(1)
Laya said:   5 years ago
Can you explain clearly about this?
(1)
Daniel said:   8 years ago
; is missing in the C option.
(1)
Reddy said:   8 years ago
C. Also a syntax error because at the semicolon has missed.
(1)
Sankar said:   8 years ago
Here the expression is evaluated from right to left.
(1)
Prit said:   9 years ago
I think both the option A and option C are true.
(1)
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