Aug 12 15:27 1996  fig1_2.c Page 1


#include <stdio.h>

/* START: fig1_2.txt */
        int
        F( int X )
        {
/* 1*/      if( X == 0 )
/* 2*/          return 0;
            else
/* 3*/          return 2 * F( X - 1 ) + X * X;
        }
/* END */

main( )
{
    printf( "F(5) = %d\n", F( 5 ) );
    return 0;
}













































Aug 12 15:27 1996  fig1_3.c Page 1


#include <stdio.h>

/* START: fig1_3.txt */
        int
        Bad( unsigned int N )
        {
/* 1*/      if( N == 0 )
/* 2*/          return 0;
            else
/* 3*/          return Bad( N / 3 + 1 ) + N - 1;
        }
/* END */

main( )
{
    printf( "Bad is infinite recursion\n" );
    return 0;
}













































Aug 12 15:27 1996  fig1_4.c Page 1


#include <stdio.h>

#define PrintDigit( Ch )      ( putchar( ( Ch ) + '0' ) )

/* START: fig1_4.txt */
        void
        PrintOut( unsigned int N )  /* Print nonnegative N */
        {
            if( N >= 10 )
                PrintOut( N / 10 );
            PrintDigit( N % 10 );
        }
/* END */

main( )
{
    PrintOut( 1369 );
    putchar( '\n' );
    return 0;
}