struct student
    char name[20];
    int rollno;
    float marks;
struct student s1[3];
void main()
    int i;
    printf("Enter Name, RollNo, and Marks of Three Students:\n");
    //Reading Student details
    for(i=0; i<=2; i++)
        scanf("%s %d %f",&s1[i].name,&s1[i].rollno,&s1[i].marks);

    // Printing the same details what you enter in array form.
    printf("Student Name\tStudent Rollno\tStudent Marks:");
    for(i=0; i<=2; i++)
        printf("\n%s\t\t%d\t\t%.2f", s1[i].name, s1[i].rollno, s1[i].marks);


Enter Name, RollNo, and Marks of Three Students:
John 123 88
Ravi 256 97
Raj 214 94
Student Name    Student Rollno  Student Marks:
John            123             88.00
Ravi            256             97.00
Raj             214             94.00