C Language 12th time assignment

#include <stdio.h>#include<stdlib.h>structstudent{Charsno[Ten]; Charstele[ the]; Charsname[ -]; intscore; intAge ; };intMain () {student class3[ to]; scanf ("%s%s%s%d%d", &class3[0].sno,&class3[0].sname,&class3[0].stele,&class3[0].age,&class3[0].score); printf ("%s%s%s%d%d", class3[0].sno,class3[0].sname,class3[0].stele,class3[0].age,class3[0].score); return 0; }

#include <stdio.h>
struct student
{
Char sno[10];
Char sname[20];
int age;
};
int main ()
{
Student class3[31];
FILE *fp=fopen ("D:\\input.txt", "R");
FSCANF (FP, "%s%s%d", class3[0].sno,class3[0].sname,&class3[0].age);
Fclose (FP);
Fp=fopen ("D:\\output.txt", "w");
printf ("%s%s%d", class3[0].sno,class3[0].sname,class3[0].age);
Fclose (FP);
return 0;
}

#include <stdio.h>
struct student{
Char sno[10];
Char sname[20];
int age;
};
Student S1;
void Addstudent ()
{
FILE *fp=fopen ("D:\\student.txt", "A +");
printf (School Number: ");
scanf ("%s", S1.sno);
printf ("Name:");
scanf ("%s", s1.sname);
printf ("Age:");
scanf ("%s", &s1.age);
fprintf (FP, "\n%s%s%d", s1.sno,s1.sname,s1.age);
printf ("message added successfully. \ n ");
}
void Querystudent ()
{
printf ("Query");
}
void Updatestudent ()
{
printf ("Update");
}
void Deletestudent ()
{
printf ("delete");
}
void MainMenu ()
{
int choice;
printf ("Student management system \ n");
printf ("1. Add student information \ n");
printf ("2. query student information \ n");
printf ("3. Modify student information \ n");
printf ("4. Delete Student information \ n");
printf ("Please select:");
scanf ("%d", &choice);
Switch (choice)
{
Case 1:
Addstudent ();
Break
Case 2:
Querystudent ();
Break
Case 3:
Updatestudent ();
Break
Case 4:
Deletestudent ();
Break
Default
printf ("Wrong input, program quits!") ");
}
}
int main ()
{
MainMenu ();
}

C Language 12th time assignment