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 looping statements, Looping Statements The statements usually u...

Looping Statements The statements usually used for looping are for, do-while, while. The goto statement can be used for looping, but its use is generally avoided as it leads to

#Class objects, make use of class objects two calculate average

make use of class objects two calculate average

C program to count the words, C program to count the words: void CountW...

C program to count the words: void CountWords();          void main()          {             printf("\n\tcount the words and enter string\n\n\n");             Count

#title, Given an integer n and a permutation of numbers 1, 2 ... , n-1, n w...

Given an integer n and a permutation of numbers 1, 2 ... , n-1, n write a program to print the permutation that lexicographically precedes the given input permutation. If the given

Create program to prints out the value of a variable, Here is a short progr...

Here is a short program. It prints out the value of a variable "x". Ernie and Bert disagree about what will be printed: Ernie says, the value gets changed in "changeX" so it will p

Explain integer literal, Integer literal Integer is numbers without fra...

Integer literal Integer is numbers without fractional parts. e.g. 20       // Decimal 024      // Octal     0x14     // Hexadecimal To indicate long, unsigned,

Write code to implement constructor and assessors, Study the given class sp...

Study the given class specification and answer the questions that follow: class Person { private:   string name;   int yrBorn;   int yrDied;   public:   Per

What is some instance of operator overloading?, A: Here are a few of the ma...

A: Here are a few of the many instance of operator overloading: myString + yourString may concatenate two std::string objects myDate++ may increment a Date object a * b may m

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