/* --------------------------------------------------------------------- 
**  Implementation of a dynamic ragged array.
**  Figure 19.3: A variable number of varying-sized objects.
**  Figure 19.4: Building a ragged array.
** --------------------------------------------------------------------- 
*/
#include "tools.h" 

typedef struct FAMILY { int n; string* name; } family_t;
void get_names( string* new, int mem ); 
void print_family( family_t f);

void main( void ) 
{ 
    int mem;                /* # of members in new family. */ 
    string* new;            /* Newest family. */

    int fam = 0;            /* # of families in the club. */ 
    family_t club[20];      /* Membership roster. */                                       

    puts( "\n Pleasant Lakes Club Membership List " );             
    /*fam = read_file( club );  /* Read current members from file. */
    /*print_all( club, fam );   /* Print roster of current members. */

    printf( " Ready for new family data.  How many people? " );            
    scanf( "%i", &mem );
    new = malloc( mem * sizeof(string) );                  
    if (new == NULL) fatal( "Not enough memory for new family." );

    club[fam].n = mem;                  
    club[fam].name = new;
    get_names( new, mem );

    print_family( club[fam] );
    fam++;
    //write_file( club, fam );    /* Will write file and free dynamic storage. */
    bye();  
}           

/* ------------------------------------------------------------------------ */
void    
get_names( string new[], int mem ) 
{      
    int k;                  /* Loop index. */
    char buf[80];           /* For input of member names. */
    int len;                /* Name length. */

    puts( "\n Enter names at prompt, parents first.\n"
          " Surnames may be omitted if same as first." );

    for (k = 0; k < mem; ++k) {       /* Read & install new names. */
        printf( " > " );
        scanf( " %79[^\n]", buf );
        len = strlen( buf );          /* Measure name. */
        new[k] = malloc( len + 1 );   /* Allocate space. */
        strcpy( new[k], buf );        /* Copy name into space. */
    }
}

/* ------------------------------------------------------------------------ */
void    
print_family( family_t f ) 
{      
    int k;                          /* subscript variable for loop */              
    printf( "\n This family has %i members:\n", f.n );      
    for (k = 0; k < f.n; ++k)  printf( "\t%s\n", f.name[k] ); 
}