void create_student(void)
{
	char reg_no[4];

	clrscr();
	gtotal++;
	student_index[gtotal].index = gtotal;

	printf("%s", student_index[1].reg_no);
	printf("\n%s", student_index[1].surname);
	printf("\n%s", student_index[1].forename);

	while (student_index[gtotal].index != 999)
	{
		printf("\nPlease enter a registration number, i.e., j123 :");
		gets(student_index[gtotal].reg_no);
		fflush(stdin);
			if ((strlen(student_index[gtotal].reg_no) != 4) || (isdigit(student_index[gtotal].reg_no[0])) || (!isdigit(student_index[gtotal].reg_no[1])) || (!isdigit(student_index[gtotal].reg_no[2])) || (!isdigit(student_index[gtotal].reg_no[3])))
			{
				printf("\nYou must have exactly 1 letter and 3 numbers in\nthe format j123 for a total of 4 characters\n");
			}
			else
			{
				search_for_account();
			}
	}

	printf("\nPlease enter the students surname: ");
	gets(student_index[gtotal].surname);
	fflush(stdin);

	printf("\nPlease enter the students first name :");
	gets(student_index[gtotal].forename);
	fflush(stdin);

	while ((student_index[gtotal].credits < 10) || (student_index[gtotal].credits > 15))
	{
		printf("\nPlease enter the number of credits being taken (10-15) :");
		scanf("%d", &student_index[gtotal].credits);
		fflush(stdin);
	}
}

void search_for_account(void)
{
	int loop;

	for (loop = 1; loop <= MAX; loop++)
	{
		if (loop != gtotal)
		{
			if (student_index[loop].reg_no == student_index[gtotal].reg_no)
				{
					printf("\nStudent registration number already in use, please pick another");
					return;
				}
				else
				{
					printf("%s", student_index[gtotal].reg_no);
					student_index[gtotal].index = 999;
				}
			return;
		}
	}
}