C++ setfill method example

C++ setfill method example:

setfill method is defined in header. This method is used to set a fill character for a stream. In this post, we will learn how to use setfill with an example.

Definition of setfill:

setfill is defined as like below:

setfill(char_type c)

It takes only one parameter, c, which is the fill character for the stream. char_type is the type of characters used by the stream.

This method doesn’t return anything.

Example of setfill:

Let’s take a look at the below example program:

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
    cout << setfill('$') << setw(5);
    cout << "10" << endl;
}

In this program, we are using setfill to use $ as the fill character. setw is used to give the width as 5. So, if anything is printed using cout of length less than 5, it will add $ to its left.

Since 10 is of size two, it will add three $ to its left.

The above program will print:

$$$10

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