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

Explain operators in c language, Explain Operators in C Language? The C...

Explain Operators in C Language? The C language is very rich in built - in - operators and it places more significance on operators than do most other computer languages. The C

Prime, Prepare a program to obtain prime factors of any integer number usin...

Prepare a program to obtain prime factors of any integer number using functions

Explain virtual base classes, Virtual Base Classes This ambiguity can b...

Virtual Base Classes This ambiguity can be resolved if the class derived have only one copy of the class base. This can be done by making the base class a virtual class. This k

Miss, Depreciation to a salvage value of 0. For tax purposes an item m...

Depreciation to a salvage value of 0. For tax purposes an item may be depreciated over a period of several years, n. With the straight line method of depreciati

Explain recursive functions, Recursive Functions Recursion is a process...

Recursive Functions Recursion is a process by which a function includes itself with a condition for its safe exit. It is best suitable for a recursive problem. A typical exampl

Explain type casting, Type Casting Implicit type conversions, as allowe...

Type Casting Implicit type conversions, as allowed by the language, can lead to errors creeping in the program if care is not taken. Thus, explicit type conversions may be used

Loops, how to make a diamond from steric

how to make a diamond from steric

Write a procedure to add and subtract-money, Money is immutable and is asso...

Money is immutable and is associated with a currency. When two money entities are added or subtracted be sure to consider currency conversion. You must create a money object result

Program to compute distance travelled by ball, Produce a pseudo code to be ...

Produce a pseudo code to be used for development compute and display some data on the bounces a ball will make when dropped from a given height. To simplify the problem, you ass

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