prog7_07.cpp

一本语言类编程书籍

// Program 7.7 Using pointer notation with a multidimensional array
#include <iostream>
#include <iomanip>
#include <cctype>
using std::cout;
using std::endl;
using std::setw;

int main() {
  const int table = 12;                                // Table size
  long values[table][table] = {0};                     // Stores the table values

  // Calculate the table entries
  for(int i = 0; i < table ; i++)
    for(int j = 0; j < table ; j++)
      *(*(values + i) + j) = (i + 1) * (j + 1);        // Full use of pointer notation

  // Create the top line of the table
  cout << "     |";
  for(int i = 1 ; i <= table ; i++)
    cout << " " << setw(3) << i << " |";
  cout << endl;

  // Create the separator row
  for(int i = 0 ; i <= table ; i++)
    cout << "------";
  cout << endl;

  for(int i = 0 ; i < table ; i++) {                   // Iterate over the rows
    cout << " " << setw(3) << i + 1 << " |";           // Start the row

    // Output the values in a row
    for(int j = 0 ; j < table ; j++)
      cout << " " << setw(3) << values[i][j] << " |";  // Array notation
    cout << endl;                                      // End the row
  }

  return 0;
}