Show justification format flags, the left, right, and internal format flags. - C++ File Stream

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Description

Show justification format flags, the left, right, and internal format flags.

Demo Code

#include <iostream>
using namespace std;
int main()//ww  w  . ja  va  2 s.c  om
{
   // Use default width.
   cout << "Default format.\n";
   cout << "|";
   cout << 123.45 << "|" << "\n\n";
   // Use default right justification
   cout << "Right-justify in a field width of 12.\n";
   cout << "|";
   cout.width(12);
   cout << 123.45 << "|" << "\n\n";
   // Switch to left justification.
   cout << "Left-justify in a field width of 12.\n";
   cout.setf(ios::left, ios::adjustfield);
   cout << "|";
   cout.width(12);
   cout << 123.45 << "|" << "\n\n";
   // Turn on showpos, use left-justification.
   cout << "Turning on showpos flag.\n";
   cout.setf(ios::showpos);
   cout << "Left-justify set in a field width of 12 again.\n";
   cout << "|";
   cout.width(12);
   cout << 123.45 << "|" << "\n\n";
   // Now, use internal.
   cout << "Turning on internal justification.\n";
   cout.setf(ios::internal, ios::adjustfield);
   cout << "Internal justification in a field width of 12.\n";
   cout << "|";
   cout.width(12);
   cout << 123.45 << "|" << endl;
   return 0;
}

Result


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