Explain use of any two I/O formatting flags in C++ with example.

C++ defines some format flags for standard input and output, which can be manipulated with the flags, setf, and unsetf functions. For example,

•  cout.setf(ios_base::left, ios_base::adjustfield);
•  void stream::unsetf(fmtflags flags);

#include <iostream.h>

main()

{

ios_base::fmtflags original_flags = cout.flags();

cout<< 812<<‘|’;

cout.setf(ios_base::left,ios_base::adjustfield);

cout.width(10);

cout<< 813 << 815 << ‘\n’;

cout.unsetf(ios_base::adjustfield);

cout.precision(2);

cout.setf(ios_base::uppercase|ios_base::scientific);

cout << 831.0 << ‘ ‘ << 8e2;

cout.flags(original_flags);

}