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- //: C18:Format.cpp
- // From Thinking in C++, 2nd Edition
- // Available at http://www.BruceEckel.com
- // (c) Bruce Eckel 1999
- // Copyright notice in Copyright.txt
- // Formatting functions
- #include <fstream>
- using namespace std;
- #define D(A) T << #A << endl; A
- ofstream T("format.out");
-
- int main() {
- D(int i = 47;)
- D(float f = 2300114.414159;)
- char* s = "Is there any more?";
-
- D(T.setf(ios::unitbuf);)
- // D(T.setf(ios::stdio);) // SOMETHING MAY HAVE CHANGED
-
- D(T.setf(ios::showbase);)
- D(T.setf(ios::uppercase);)
- D(T.setf(ios::showpos);)
- D(T << i << endl;) // Default to dec
- D(T.setf(ios::hex, ios::basefield);)
- D(T << i << endl;)
- D(T.unsetf(ios::uppercase);)
- D(T.setf(ios::oct, ios::basefield);)
- D(T << i << endl;)
- D(T.unsetf(ios::showbase);)
- D(T.setf(ios::dec, ios::basefield);)
- D(T.setf(ios::left, ios::adjustfield);)
- D(T.fill('0');)
- D(T << "fill char: " << T.fill() << endl;)
- D(T.width(10);)
- T << i << endl;
- D(T.setf(ios::right, ios::adjustfield);)
- D(T.width(10);)
- T << i << endl;
- D(T.setf(ios::internal, ios::adjustfield);)
- D(T.width(10);)
- T << i << endl;
- D(T << i << endl;) // Without width(10)
-
- D(T.unsetf(ios::showpos);)
- D(T.setf(ios::showpoint);)
- D(T << "prec = " << T.precision() << endl;)
- D(T.setf(ios::scientific, ios::floatfield);)
- D(T << endl << f << endl;)
- D(T.setf(ios::fixed, ios::floatfield);)
- D(T << f << endl;)
- D(T.setf(0, ios::floatfield);) // Automatic
- D(T << f << endl;)
- D(T.precision(20);)
- D(T << "prec = " << T.precision() << endl;)
- D(T << endl << f << endl;)
- D(T.setf(ios::scientific, ios::floatfield);)
- D(T << endl << f << endl;)
- D(T.setf(ios::fixed, ios::floatfield);)
- D(T << f << endl;)
- D(T.setf(0, ios::floatfield);) // Automatic
- D(T << f << endl;)
-
- D(T.width(10);)
- T << s << endl;
- D(T.width(40);)
- T << s << endl;
- D(T.setf(ios::left, ios::adjustfield);)
- D(T.width(40);)
- T << s << endl;
-
- D(T.unsetf(ios::showpoint);)
- D(T.unsetf(ios::unitbuf);)
- // D(T.unsetf(ios::stdio);) // SOMETHING MAY HAVE CHANGED
- } ///:~
-