结构体时间设计C语言

#include<stdio.h>

#include<stdlib.h>

#include<string.h>

struct date

{

int y;

int m;

int d;

};

int isrun(int y)

{

if(y%400==0)return 1;

else if(y%100&&y%4==0)return 1;

else return 0;

}

int num(struct date today)

{

int month[12]={31,28,31,30,31,30,31,31,30,31,30,31};

if(isrun(today.y))month[1]=29;

int sum=0;

for(int i=0;i<today.m-1;i++)

{

sum+=month[i];

}

sum+=today.d;

return sum;

}

int main()

{

struct date today;

scanf("%d %d %d",&today.y,&today.m,&today.d);

printf("%d",num(today));

return 0;

}