Code:
void UpdateStudents(Student students[])
{
   int choice;
printf("What do you want to change?\n");
printf("1. Change ID number\n 2. Change Last Name\n 3. Change First Name\n 4. Change Date of Birth\n 5. Change Address\n 6. Change Telephone number\n 7. Change Program\n");
scanf("%d", &choice);
switch (choice) {
    case 1:
        printf("Input new ID number: ");
        scanf("%d", &students[i].ID);
        break;
        
     case 2:
        printf("Input new Last Name: ");
        scanf("%d", &students[i].LastName);
        break;
        
     case 3:
        printf("Input new First Name: ");
        scanf("%d", &students[i].FirstName);
        break;
        
     case 4:
        printf("Input new Date of Birth: ");
        scanf("%d", &students[i].DateOfBirth);
        break;
        
      case 5:
        printf("Input new Address: ");
        scanf("%d", &students[i].Address);
        break; 
        
       case 6:
        printf("Input new Telephone Number: ");
        scanf("%d", &students[i].TelephoneNumber);
        break;  
              
       case 7:
        printf("Input new Program: ");
        scanf("%d", &students[i].ProgramPursued);
        break;  
                    
    default:
        printf("Bad input\n");
        break;
}  

}