[C]struct结构变量在函数间传递

#include <stdio.h>

struct date
{
    int day;
    char month[10];
    int year;
};

void out(struct date); // 1.该行一定要置于struct date定义的下面, 2.struct date是新定义的一种数据结构，类比int, float

int main()
{
    struct date today;
    puts("input day: ");
    scanf("%d", &today.day);
    puts("input month: 'May', 'April': ");
    scanf("%9s", today.month);
    puts("input year: ");
    scanf("%d", &today.year);
    out(today);
    return 0;
}

void out(struct date t) // struct date是新定义的一种数据结构，类比int, float
{
    printf("%s-%d-%d
", t.month, t.day, t.year);
}