understand array of structures

/*P2.24 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);
}