Program to understand Array of Structures

#include<stdio.h>
struct student
{
char name[20];
int rollno;
float marks;
};
main( )
{
int i;
struct student stuarr[10];
for(i=0; i<10; i++)
{
printf("Enter name, rollno and marks  : ");
scanf("%s%d%f", stuarr[i].name, &stuarr[i].rollno, &stuarr[i].marks);
}
for(i=0; i<10; i++)
printf("%s  %d   %f \n", stuarr[i].name, stuarr[i].rollno, stuarr[i].marks);
}