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

What are the differences among a struct in c & in c++?, A: In C++ a struct ...

A: In C++ a struct is alike to a class except for the default access specifier( refer to other question in the document). In C we ought to include the struct keyword while declarin

Flow chart, obtain two numbers from thekey board,and determain and display(...

obtain two numbers from thekey board,and determain and display(if either)is the larger of two numbers.

Asdas, Ask question #Miniasdasmum 100 words accepted#

Ask question #Miniasdasmum 100 words accepted#

Float number, We can combine more than one variable on the same line i.e. ...

We can combine more than one variable on the same line i.e.   float number1,number2,number3; etc Sometimes we want to mix the variable types used on the same line, this could

C program for change the case in title case, #include stdio.h> #include ...

#include stdio.h> #include conio.h> #include ctype.h> #include string.h>   void main() {           int i=0,j=0,length;           char a[30];           cl

C, A palindrome is a string that reads the same from both the ends. Given a...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Minimum shelf, At a shop of marbles, packs of marbles are prepared. Packets...

At a shop of marbles, packs of marbles are prepared. Packets are named A, B, C, D, E …….. All packets are kept in a VERTICAL SHELF in random order. Any numbers of packets with thes

Explain the command line parameters, Explain the Command Line Parameters? ...

Explain the Command Line Parameters? The Command line arguments are parameters supplied to a program from the operating system. These arguments are parameters accepted to main

Assignment, Ask question #MA company is rewriting its payroll system to mov...

Ask question #MA company is rewriting its payroll system to move it from an old mainframe to a distributed mini-computer/PC-based networked setup. No new functionality will be adde

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