C program to stores student information in structure and display it

#include<stdio.h>
    struct student{
        int rollno;
        char name[50];
        int m1,m2,m3;

    } S1;
int main()
{
    printf("Enter your rollno: ");
    scanf("%d", &S1.rollno);
    fflush(stdin);
    printf("Enter your name: ");
    scanf("%[^\n]", &S1.name);
    printf("Enter marks in 3 subjects:\n");
    scanf("%d %d %d", &S1.m1, &S1.m2, &S1.m3);
    printf("\nRollNo: %d",S1.rollno);
    printf("\nName: %s",S1.name);
    printf("\nMarks in 3 Subjects: %d  %d  %d",S1.m1, S1.m2, S1.m3);
    return 0;
}