Explain the changing field width, C/C++ Programming

Assignment Help:

Changing Field width

The printf() and scanf() functions from the standard library, use width specifier for controlling the width of its output . Similarly, the ostream class also has a member function width() for the same. This function has the following prototype.

                int width(void);

                int width(int newsize);

The first form returns the current field width. The default is always zero. That is because, the cout object always uses space just wide enough to output the values and a default size if zero matches all. The second form can be used to alter the current width setting. The argument passed to it is the new width to be set. It also returns the previous width. The width () function affects only the next item displayed. The filed width reverts to default afterwards.

e.g.

                void main()

                 {

                                cout<<" default width="<< cout.width()<

                                cout<<"[";

                                cout.width(10);                                 Set width to 10

                                cout<<"A";

                                cout<<"]";

                }

 


Related Discussions:- Explain the changing field width

Program of file data, Program of file data: FileData::FileData( ffblk&...

Program of file data: FileData::FileData( ffblk& blk ) :     fileName( blk.ff_name ),     fileDate( (blk.ff_fdate >> 5) & 0x000F,               blk.ff_fdate & 0x0001F

Find the internal resistance of the battery, The voltage at the terminals o...

The voltage at the terminals of a battery is 52V when no load is linked and 48.8V when a load taking 80A is connected. Find the internal resistance of the battery. What wou

New customer, #questionhow can i add new customer and alot him a new unique...

#questionhow can i add new customer and alot him a new unique id ..

How do one throw polymorphically?, How do one throw polymorphically?       ...

How do one throw polymorphically?               A: Sometimes people write code such as: class MyExceptionBase { }; class MyExceptionDerived : public MyExceptionBase { };

Need ftp upload and mysql, Need FTP Upload and MySQL Project Description...

Need FTP Upload and MySQL Project Description: We are in need of an executable application that will be execute as a scheduled task on Windows Server 2008 R2 and can perform

Algorithm , write an algorithm to swap values without using third variable

write an algorithm to swap values without using third variable

How many non-boundary pits and peaks are on the map, Armed with your functi...

Armed with your function from above, we can do some interesting things. For instance, any pixel where the offsets are both zero is a pit (lower than all surrounding points) .

Need solution for simple beginner level c program, search words from a pass...

search words from a passage and return snippets in html format..

Define the object-oriented terms, Question : (a) Define the following O...

Question : (a) Define the following Object-Oriented terms: (i) Encapsulation (ii) Inheritance (iii) Abstraction (iv) Polymorphism. (b) What are objects in Lingo progra

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd