Solution for Exercise 24-4

ex2403 Header File

#include <stdio.h>
#include <stdlib.h>

/* prototypes */

void fillstructure(void);
void printstructure(void);

/* constants */

/* variables */

struct thing {
    char name[32];
    int age;
    };

typedef struct thing human;

ex2404 main.c

#include "ex2403.h"

human person;

int main()
{
    fillstructure();
    printstructure();
    return 0;
}

ex2404 input.c

#include "ex2403.h"

extern human person;

void fillstructure(void)
{
    printf("Enter your name: ");
    fgets(person.name,31,stdin);
    printf("Enter your age: ");
    scanf("%d",&person.age);
}

ex2404 output.c

#include "ex2403.h"

extern human person;

void printstructure(void)
{
    printf("You are %s\n",person.name);
    printf("And you are %d years old.\n",person.age);
}

Notes

* The gcc command to create this multi-module program is:

gcc main.c input.c output.c -o ex2404

Exercise ex2501 →