3i Infotech Placement: Sample Questions 376 - 378 of 1245

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Question 376

Question

MCQ▾

If R, S, and Q can wallpaper a house in 8 hours and R and S can do it in 12 hours, how long will it take Q alone to wallpaper the house?

Choices

Choice (4)

a.

12 hours

b.

8 hours

c.

20 hours

d.

24 hours

Answer

d.

Explanation

R, S and Q together can complete the work in 8 hours.

R and S can do the same work in 12 hours.

We are asked to find the time taken by Q to complete the same work.

Let Q is taking x hours to complete the work.

So, Q alone will take 24 hours to complete the work.

Question 377

Edit

Describe in Detail

Essay▾

To get string of words.

Explanation

  • To get string of words is Gets () .
  • Gets () accepts single or multiple characters of string including spaces from the standard input device.

    How to declare:

gets (variable_name) ;

Example of declaration:

char ch [10] ;

gets (ch) ;

  • Gets () read string from the screen.
  • Gets () statement encounters the characters entered by user will be copied into the variable.
  • Gets () uses stdin (Standard Input Output) as source, but it does not include the ending newline character in the resulting string and does not allow to specify a maximum size for string variable.

Question 378

Edit

Describe in Detail

Essay▾

In the given binary tree, using array we can store the node 4 at which location?

Explanation

Image Shows the Binary Tree
  • At location 6: 1 2 3 -- 4 -- 5
  • This is how array stores the tree: Root LC1 RC1 LC2 RC2 LC3 RC3 LC4 RC4, where LCn means Left Child of node n and RCn means Right Child of node n

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