C语言创建和使用函数实例

/* lethead1.c */
#include <stdio.h>
#define NAME "GIGATHINK, INC."
#define ADDRESS "101 Megabuck Plaza"
#define PLACE "Megapolis, CA 94904"
#define WIDTH 40

void starbar(void);  /* prototype the function */

int main(void)
{
    starbar();
    printf("%s\n", NAME);
    printf("%s\n", ADDRESS);
    printf("%s\n", PLACE);
    starbar();       /* use the function       */

    return 0;
}

void starbar(void)   /* define the function    */
{
    int count;

    for (count = 1; count <= WIDTH; count++)
        putchar('*');
    putchar('\n');
}