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C Questions with Answers:
1. The Case keyword is followed by?
A. Float values
B. Character values
C. Integer values
D. Both b&c
Ans: You know that “case” keyword is used in switch statement for multiple branching.
In that we can use integer and character values.Float values are not allowed.
Ex..
case 1:
case ‘a’:
like this..
So the answer i D. (Both b &c).(i.e Character & Integer values).

2. How to make an infinity loop in C?
Ans:
Write a code like this in a c pgm.
{loop:
goto loop
}
If we didn’t give any conditional statement to terminate an loop, it will go infinitely.is it? so the above coding is the ans.

Write the o/p.
Ex1:
#define SQR(x) x * x

main()
{
printf("%d", 225/SQR(15));
}
a. 1
b. 225
c. 15
d. none of the above

Ans:
Here you can rewrite the code as 225/15 *15.
 15 * 15 =225 it is the ans.


Ex:2
main()
{
int i = 0xff ;
printf("%d", i<<2);
}


a. 4
b. 512
c. 1020
d. 1024


Ans:
Here the left shift operator causes all the bits in the first operand to be shifted to the left by the number of positions indicated by the second operand.(here i=>1st operand, 2 => 2nd operand). Here the bits are represented..(4 bit for 1 digit..i.e f => 1 1 1 1)
1 1 1 1 1 1 1 1
When shited leftwise(2 times).

1 1 1 1 1 1 1 1 0 0


this can be represented by
3 15 12 is it.. i.e in hexadecimal form 3fc.
convert to decimal form..
3 * 16**2 + 15 * 16**1+12 *16**0 = 1020 this is the answer.(Ans.C)

How to Clear Recent Files (documents) in Ms- Word, Excel,..Photoshop

Ms- Word, Ms - Excel:
1. Tools Menu => Options => General Tab
2. Deselect the option “Recent used file list”(or clear the entries) => Ok

Photoshop:
Edit Menu => Preferences => File Handling => Put “0” (zero) in the “Recent file list contains” options => Ok.

Adding shortcuts to the Taskbar

Adding shortcuts to the Taskbar:
Right click on the Taskbar => Toolbars => select the software or folder u want to add =>ok
U can also right click =>drag & drop the icon)

Locking the Taskbar:
If u don’t want the taskbar to be moved, then right click on the taskbar => select “Lock the Taskbar”. Otherwise,
Start => Settings => Control Panel => Taskbar & StartMenu => Select the option “Lock the taskbar” => Ok

Note: Sometimes the whole monitor display may be changed ( upside down). Then check the “color quality” & “screen resolution” in “Display” Option, if it is changed, choose the correct option.

Creating “jpg” files from Ms - word doc (content)

1. Copy the content (CTRL+C) from MS - Word
2. Open Ms Paint , Edit Menu => Paste
3. Then File => Save => In the “Save As” dialog box, Choose “JPEG” in “save as type” option => then type the name => Save

Note:

* We can also use “Print Screen” key (to copy from word).
* We can also use Adobe Photoshop or Corel Photo-paint to get high resolution.

Taking (snapshots) photos from Video files:

Windows Movie Maker:
1. Play Menu= >Play clip
2. Click the “Take picture” button (available in the right corner) => Then save the picture.

Power DVD:
1. Run the Movie , then right click the button “Capture frame” => Capture to Clipboard
2. Then open Paintbrush => Edit Menu = >Paste = > Save the picture.

Windows Media Player:
1. Tools Menu => Options => “Performance” Tab => Advanced” button.
2. Uncheck the “Use overlays” Option => Ok.
3. Then (while running the movie) press the button “Print Screen” in the keyboard.
4. Open “Mspaint” and paste it then save the picture.

Inserting video files into Powerpoint slide:

Insert Menu => Movies & sounds => Movie from File =>Select the file

Ex: Windows Media Video files, Videos Captured through Webcam,,etc

If u want to play it automatically => Click “yes” otherwise “No”

Note: File with some extensions will not adopt this procedure.

Playing movies(or songs) with subtitles

(English translation of audio comments)
In VLC Media Player:

Video Menu => Subtitles Track => Select “Track(English)”

In Windows Media Player:

Play Menu => Captions & subtitles => select “on if available”