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

Lexicographic permutation, given integer ''n'' and permutation of numbers 1...

given integer ''n'' and permutation of numbers 1,2,..n-1, c program to print permutation that lexicograghically precedes given input permutation if permutation is least print input

Program to find the number, i need a program that find the number of negati...

i need a program that find the number of negative integers in a list.

I want skype recorder application, I want Skype Recorder Application + Setu...

I want Skype Recorder Application + Setup + Sourcecode + NICE UI Project Description: i want an application built which will allow user to record skype audio or video calls

I need cryengine sandbox speedometer and tachometer, I need Cryengine Sandb...

I need Cryengine Sandbox Speedometer and Tachometer We want to get working Tachometer and Speedometer for a car in latest Cryengine Sandbox. You will find how to make it usin

When should i use references, A: Use references when you can use, and use p...

A: Use references when you can use, and use pointers when you have to. References are generally preferred over pointers whenever you don't require "reseating". Usually this mean

Padovan String, A Padovan string P(n) for a natural number n is defined as:...

A Padovan string P(n) for a natural number n is defined as: P(0) = ‘X’ P(1) = ‘Y’ P(2) = ‘Z’ P(n) = P(n-2) + P(n-3), n>2 where + denotes string concatenation. For a string of t

Explain hiding overloaded functions, Hiding overloaded functions We can...

Hiding overloaded functions We cannot overload a base class function by redefining it in a derived class with a dissimilar argument list. Consider examples to see if similar fu

Program for single int parameter, Write a function that has a single int pa...

Write a function that has a single int parameter n and returns an int: 0 if n is negative, otherwise 1. You are not allowed to simply check the integer value, and should use the fu

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