/* --------------------------------------------------------------------- 
**  Figure 13.27:  Magic memo maker.
**  Figure 13.29:  Composing and printing the memo.
** --------------------------------------------------------------------- 
*/
#include "tools.h"

void compose( string name, string re, string event );  /*  Modifies name. */

#define N  4                /* Number of memo menu choices */
const string menu[N] = {"P  Promote", "T  Trip", "F  Fire", "Q  Done"};                       

#define BOSS "Leland Power"   

void main( void )                                               
{   
    char memo;              /* Menu choice.  */
    string re, event;       /* Subject and main text of memo. */
    char name[52];          /* Employee's complete name. */

    puts( "\n Magic Memo Maker" );
    for(;;) {
        memo = toupper( menu_c( " Next memo:", N, menu ));
        if (memo == 'Q') break;   /* Leave for loop and end program. */

        switch (memo) {
          case 'P': re = "Promotion";
                    event = "You are being promoted to assistant manager.";
                    break;
          case 'T': re = "Trip";
                    event = "You are tops this year "
                            "and have won a trip to Hawaii.";
                    break;                  
          case 'F': re = "Downsizing";
                    event = "You're fired. \n "
                            "Pick up your final paycheck from personnel.";
                    break;
          default:  puts( "Illegal menu choice" );
                    continue;
        }
        printf( " Enter name: " );
        scanf( " %51[^\n]", name );
        compose( name, re, event );
    }
    bye();
}

/* --------------------------------------------------------------------- */
void             /* Side effect: function modifies first argument, name. */
compose( string name, string re, string event )
{
    string extra, last;              /* Pointers used for parsing name. */                                       

    printf( "\n\n To: %s\n", name );
    printf( " From: The Big Boss\n" );
    printf( " Re: %s\n\n", re );

    /* Find end and beginning of the last name. */
    extra = strchr( name, ',' );
    if (extra != NULL) *extra = '\0';   /* mark end of last name */
    last = strrchr( name, ' ' );
    if (last == NULL) last = name;
    else ++last;

    printf( " Dear M. %s:\n %s\n\n -- %s\n\n", last, event, BOSS );
}