Solution for Exercise 16-4

ex1604

#include <stdio.h>
#include <string.h>

int main()
{
    typedef struct id
    {
        char first[20];
        char last[20];
    } personal;

    typedef struct date
    {
        int month;
        int day;
        int year;
    } calendar;

    struct human
    {
        personal name;
        calendar birthday;
    };
    struct human president;

    strcpy(president.name.first,"George");
    strcpy(president.name.last,"Washington");
    president.birthday.month = 2;
    president.birthday.day = 22;
    president.birthday.year = 1732;

    printf("%s %s was born on %d/%d/%d\n",\
            president.name.first,
            president.name.last,
            president.birthday.month,
            president.birthday.day,
            president.birthday.year);

    return(0);
}

Notes

* The typedef doesn't change the way the variables are referenced. typedef affects only the variable types.

* Remember: personal and calendar are typedef creations, not variables! There is only one structure variable declared in this code, president, at Line 24.

Exercise ex1605 →