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Output Formatting

Output Formatting. Precision. #include < iomanip > ... float grade = 86.1263f; cout.precision (4); cout << grade;. 86.13. Precision. #include < iomanip > ... float grade1 = 86.1263f ; float grade2 = 93.1311f; cout.precision (4); cout << grade1 << endl ; ...

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Output Formatting

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  1. Output Formatting

  2. Precision #include <iomanip> ... float grade = 86.1263f; cout.precision(4); cout << grade;

  3. 86.13

  4. Precision #include <iomanip> ... float grade1 = 86.1263f; float grade2 = 93.1311f; cout.precision(4); cout << grade1 << endl; ... cout << grade2 << endl;

  5. 86.1393.13

  6. Width of Output #include <iomanip> ... float grade1 = 86.1243f; float grade2 = 93.1311f; cout.width(10); cout << grade1 << endl; ... cout << grade2 << endl;

  7. 86.124393.1311

  8. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific • ios::fixed • ios::right • ios::left • ios::internal • ios::showpos • ios::showpoint • ios::skipws

  9. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific output in scientific notation • ios::fixed • ios::right • ios::left • ios::internal • ios::showpos • ios::showpoint • ios::skipws

  10. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific output in scientific notation • ios::fixed output in standard notation • ios::right • ios::left • ios::internal • ios::showpos • ios::showpoint • ios::skipws

  11. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific output in scientific notation • ios::fixed output in standard notation • ios::right output right-justified in output field • ios::left • ios::internal • ios::showpos • ios::showpoint • ios::skipws

  12. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific output in scientific notation • ios::fixed output in standard notation • ios::right output right-justified in output field • ios::left output left-justified in output field • ios::internal • ios::showpos • ios::showpoint • ios::skipws

  13. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific output in scientific notation • ios::fixed output in standard notation • ios::right output right-justified in output field • ios::left output left-justified in output field • ios::internal puts space between – or + sign and output • ios::showpos • ios::showpoint • ios::skipws

  14. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific output in scientific notation • ios::fixed output in standard notation • ios::right output right-justified in output field • ios::left output left-justified in output field • ios::internal puts space between – or + sign and output • ios::showposshows + sign • ios::showpoint • ios::skipws

  15. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific output in scientific notation • ios::fixed output in standard notation • ios::right output right-justified in output field • ios::left output left-justified in output field • ios::internal puts space between – or + sign and output • ios::showposshows + sign • ios::showpointshows decimal point with trailing zeros • ios::skipws

  16. ios flags • Statement Form • cout.setf(ios::the_flag); • Available Flags • ios::scientific output in scientific notation • ios::fixed output in standard notation • ios::right output right-justified in output field • ios::left output left-justified in output field • ios::internal puts space between – or + sign and output • ios::showposshows + sign • ios::showpointshows decimal point with trailing zeros • ios::skipwsshows output without whitespace

  17. ios Example #include <iomanip> ... double mole = 602200000000000000000000.0; float grade = 97.153f; cout.setf(ios::scientific); cout << mole << endl; cout.unsetf(ios::scientific); ... cout << grade << endl;

  18. 6.022000e+2397.153

  19. ios Example #include <iomanip> ... float money = 1441.3531f; cout.setf(ios::fixed); cout.setf(ios::showpoint); cout.precision(2); cout << money << endl;

  20. 1441.35

  21. Manipulators setw(int_val) setprecision(int_val) endl flush setfill(char_val)

  22. Manipulators • setw(int_val) • sets output width to int_val spaces • setprecision(int_val) • endl • flush • setfill(char_val)

  23. Manipulators • setw(int_val) • sets output width to int_val spaces • setprecision(int_val) • sets precision from there on out to int_val sig figs • endl • flush • setfill(char_val)

  24. Manipulators • setw(int_val) • sets output width to int_val spaces • setprecision(int_val) • sets precision from there on out to int_val sig figs • endl • puts the cursor at the beginning of the next output line • flush • setfill(char_val)

  25. Manipulators • setw(int_val) • sets output width to int_val spaces • setprecision(int_val) • sets precision from there on out to int_val sig figs • endl • puts the cursor at the beginning of the next output line • flush • flushes the buffer • setfill(char_val)

  26. Manipulators • setw(int_val) • sets output width to int_val spaces • setprecision(int_val) • sets precision from there on out to int_val sig figs • endl • puts the cursor at the beginning of the next output line • flush • flushes the buffer • setfill(char_val) • fills non-output space in a field to char_val

  27. Precision Manipulator #include <iomanip> ... float grade1 = 86.1243f; float grade2 = 93.1311f; cout << setprecision(4) << grade1 << endl; ... cout << grade2 << endl;

  28. 86.1293.13

  29. Width of Output Manipulator #include <iomanip> ... float grade1 = 86.1243f; float grade2 = 93.1311f; float grade3 = 74.4142f; cout << grade1 << endl; cout << setw(10) << grade2 << endl; cout << setfill(‘*’) << setw(10) << grade3 << endl;

  30. 86.1243 93.1311***74.4142

  31. End of Session

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