names1.c

C Primer Plus(第五版)中文版源码,I hope it will help you much

/* names1.c -- uses pointers to a structure */
#include <stdio.h>
#include <string.h>

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

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

int main(void)
{
    struct namect person;

    getinfo(&person);
    makeinfo(&person);
    showinfo(&person);
    return 0;
}

void getinfo (struct namect * pst)
{
    printf("Please enter your first name.\n");
    gets(pst->fname);
    printf("Please enter your last name.\n");
    gets(pst->lname);
}

void makeinfo (struct namect * pst)
{
    pst->letters = strlen(pst->fname) +
                   strlen(pst->lname);
}

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