names2.c

c primer plus 第五版 的源代码

/* names2.c -- passes and returns structures */
#include <stdio.h>
#include <string.h>

struct namect {
    char fname[20];
    char lname[20];
    int letters;
};

struct namect getinfo(void);
struct namect makeinfo(struct namect);
void showinfo(struct namect);

int main(void)
{
    struct namect person;

    person = getinfo();
    person = makeinfo(person);
    showinfo(person);

    return 0;
}

struct namect getinfo(void)
{
    struct namect temp;
    printf("Please enter your first name.\n");
    gets(temp.fname);
    printf("Please enter your last name.\n");
    gets(temp.lname);

    return temp;
}

struct namect makeinfo(struct namect info)
{
    info.letters = strlen(info.fname) + strlen(info.lname);

    return info;
}

void showinfo(struct namect info)
{
    printf("%s %s, your name contains %d letters.\n",
        info.fname, info.lname, info.letters);
}