p5_42b.cpp

一个文本分析程序。实现分析一段文本中字母

// Exercise 5.42 Part B Solution
#include <iostream.h>
#include <string.h>

int main()
{
   const int SIZE = 80;
   char text[ 3 ][ SIZE ], *temp;
   int lengths[ 20 ] = { 0 }, i;   

   cout << "Enter three lines of text:\n";
   
   for ( i = 0; i <= 2; ++i )
      cin.getline( &text[ i ][ 0 ], SIZE );
      
   for ( i = 0; i <= 2; ++i ) {
      temp = strtok( &text[ i ][ 0 ], ". \n" );
      
      while ( temp ) {
         ++lengths[ strlen( temp ) ];
         temp = strtok( 0, ". \n" );
      }
   }
   
   cout << '\n';
   
   for ( i = 1; i <= 19; ++i )
      if ( lengths[ i ] )
         cout << lengths[ i ] << " word(s) of length " << i << endl;

   return 0;
}