comparing 2 dates using structures

#include <stdio.h>

typedef struct date{

int day;

int month;

int year;

}datestruct;

void display(datestruct d1,datestruct d2)

{

    printf("First date is:%d/%d/%d\n",d1.day,d1.month,d1.year);

    printf("Second date is:%d/%d/%d\n",d2.day,d2.month,d2.year);

}

int datecomp(datestruct date1, datestruct date2)

{

    if (date1.year>date2.year)

    {

        return 1;

    }

    if(date1.year<date2.year)

    {

        return -1;

    }

    if (date1.month>date2.month)

    {

        return 1;

    }

    if(date1.month<date2.month)

    {

        return -1;

    }

    if (date1.day>date2.day)

    {

        return 1;

    }

    if(date1.day<date2.day)

    {

        return -1;

    }

    return 0;

}

   

    int main()

    {

datestruct date1={24,2,1979};

datestruct date2={24,2,1980};

display(date1,date2);

 int a=datecomp(date1,date2);

 if (a==0)

 {

printf("Both dates are same\n");

 }

 else

 {

printf("The dates are not same\n");

 }

 return 0;

}