#include "tools.h"
    #define MAX 10
    void count( int ages[], int adults, int teens );
    void show( int ages[], int adults, int teens );

    void main( void )
    {
        int family[MAX] = { 44, 43, 21, 19, 18, 15, 13, 11, 9, 7  };
        int Nadults=0, Nteens=0, Nkids=0;

        puts( "\nFamily Structure" );
        count( family, Nadults, Nteens );
        Nkids = MAX - (Nadults + Nteens);
        printf( "This family has %i adults, %i teens, and %i children\n", 
                Nadults, Nteens, Nkids );
        puts( "----------------------------------------------------\n" );
    }  

    /* ---------------------------------------------------- */
    void count( int ages[], int adults, int teens )
    {
        int k;
        for (k = 0; k < MAX; ++k) {
            if ( ages[k] >= 18 ) ++adults;
            else if ( ages[k] >= 13 ) ++teens;
        }
    }