prog5_09.cpp

来自「一本语言类编程书籍」· C++ 代码 · 共 36 行

// Program 5.9 Using the continue statement
#include <iostream>
#include <iomanip>
#include <cctype>
#include <limits>
using std::cout;
using std::endl;
using std::setw;

int main() {
  // Output the column headings
  cout << endl
       << setw(13) << "Character  "
       << setw(13) << "Hexadecimal "
       << setw(13) << "Decimal   "
       << endl;

  cout << std::uppercase;                      // Uppercase hex digits

  unsigned char ch = 0;                        // Character code

  // Output characters and corresponding codes
  do {
    if(!std::isprint(ch))                      // If it does not print
      continue;                                // skip this iteration

    cout << setw(7)  << ch
         << std::hex                           // Hexadecimal mode
         << setw(13) << static_cast<int>(ch)
         << std::dec                           // Decimal mode
         << setw(13) << static_cast<int>(ch)
         << endl;
  } while(ch++ < std::numeric_limits<unsigned char>::max());
  return 0;
}