The following program demonstrates the behavior of three manipulators: setw, left, and right. The program surounds each output line with '|' characters to demark the field width and padding to better demonstrates the affect of the left and right manipulators.
| Program | Output |
|---|---|
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
cout << "String" << endl;
cout << "|" << "Hello world" << "|" << endl;
cout << "|" << setw(20) << "Hello world" << "|" << endl;
cout << "|" << left << setw(20) << "Hello world" << "|" << endl;
cout << "|" << right << setw(20) << "Hello world" << "|" << endl;
cout << endl;
cout << "Number" << endl;
cout << "|" << 123.45 << "|" << endl;
cout << "|" << setw(20) << 123.45 << "|" << endl;
cout << "|" << left << setw(20) << 123.45 << "|" << endl;
cout << "|" << right << setw(20) << 123.45 << "|" << endl;
return 0;
} |
String |Hello world| | Hello world| |Hello world | | Hello world| Number |123.45| | 123.45| |123.45 | | 123.45| |