ISRO2011-72

Question

Find the output of the following Java code line 

System.out.printIn(math.floor(-7.4))

• A. -7
• B. -8
• C. -7.4
• D. -7.0

Comments

For floor function

We can write -7.4 as -7.0  only know

Can u pls say how it will be -8

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Floor is a function in java which returns the lower limit. Here -8 is lower limit to -7.4 and the higher limit would be -7.

If you represent these numbers on the number line you would have -7 approaching towards zero and -8 away from 7.4 and far from zero so the lower limit would be -8.

Hence the answer is -8.

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Friends (like me :( ) who thought $-7$ would be the answer made a simple mistake.

Floor function returns the smaller value. The negative the number the smaller the value. Thus floor(-7.4) will be $-8$ and not $-7$

Answer 1

Ans B) -8

floor is lower limit

Answer 2

 floor method​  of Java Math class. floor method returns the largest interger .so answer is (b)