\* C Program using structure to Calculate age of student at admission time *\
# include < stdio.h >
# include < conio.h >
struct student
{
int roll_num ;
char name[20] ;
struct Date
{
int D ;
int M ;
int Y ;
} bd, ad ;
} ;
int main( )
{
int r ;
struct student a ;
printf("\n Enter Student Details\n" ) ;
printf("----------------------------------------------------\n" ) ;
printf(" Enter Roll-Number : ") ;
scanf("%d", &a.roll_num ) ;
printf(" Enter Name : " ) ;
scanf("%s",a.name ) ;
printf(" Enter Birth-Date : ") ;
scanf("%d-%d-%d", &a.bd.D, &a.bd.M, &a.bd.Y ) ;
printf(" Enter Admission-Date : ") ;
scanf("%d-%d-%d", &a.ad.D, &a.ad.M, &a.ad.Y) ;
r = a.ad.Y-a.bd.Y ;
printf("----------------------------------------------------\n") ;
printf("\n Approximate Age of Student at the Time of Admission\n") ;
printf("----------------------------------------------------\n") ;
printf("\t%d Years", r) ;
return 0 ;
}