HELP! I have any trouble with function in C!

I got a task of programming like this : I have 2 files, datafile.txt and payfile.txt. datafile.txt contains the data in the form Employee ID, Pay Rate, and Hours Worked.

The rule is :
if hours worked<=40, the wages=hours_worked*pay_rate.
else the wages=(40*pay rate)+(hours worked-40)*1.5* pay rate.

data input must be taken from datafile.txt. from left to right, they are employee id, pay rate ($), and hours worked, respectively :
1017032001#50#15
1017032002#70.3#23
1017032003#100#8
1017032004#20#24
1017032005#43#10
1017032006#250#4
1017032007#22.5#50
1017032008#10.5#24
1017032009#30#68
1017032010#22#34

The output is in form
Employee ID : ---
Pay Rate : ---
Hours Worked : ---
Wages : ---

on the screen and payfile.txt.


I have done with the coding, but my program's not running properly. I made it in linked-list form, and the program has a menu. The problem is, whatever choice I had entered, the program stopped.

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <ctype.h>

void input_data ();
void print_data ();

struct employee
{
char employee_id[80];
float pay_rate;
int hours_worked;
float wages;
struct employee *next;
};

struct employee *head=NULL;
struct employee *current=NULL;
struct employee *tail=NULL;

/*==========End of variable declaration==========*/

/*==========Main menu==========*/
int main (void)
{
char test='\0';

printf("==========MENU==========\n");
printf("1. Input data\n");
printf("2. Print out all of data\n");
printf("3. Exit\n");
printf("========================\n\n");
printf("Please enter your choice (1-3) : ");
scanf(" %c", &test);
system("cls");

switch (test)
{
case 1 : input_data; break;
case 2 : print_data; break;
case 3 : return 0; break;
}

return 0;
}

void input_data ()
{
char ch;
char temp_pay_rate[50], temp_hours_worked[50] ;
int count, space=0;
FILE *pfile=NULL;
char *filename="C:\\Dev-Cpp\\datafile.txt";

/*==========End of variable declaration==========*/

pfile=fopen(filename, "r");

if (pfile!=NULL)
{
do
{
current=(struct employee*)malloc(sizeof(struct employee));

count=0;
ch=fgetc(pfile);
do
{
if (ch=='#')
{
space++;
goto end;
}
switch (space)
{
case 0 : current->employee_id[count]=ch; break;
case 1 : temp_pay_rate[count]=ch; break;
case 2 : temp_hours_worked[count]=ch; break;
}
count++;
end:
ch=fgetc(pfile);
} while (ch!='\n');

current->pay_rate=atof(temp_pay_rate);
current->hours_worked=atoi(temp_hours_worked);
if(current->hours_worked<=40) current->wages=current->hours_worked*current->pay_rate;
else current->wages=(40*current->pay_rate)+(current->hours_worked-40)*1.5*current->pay_rate;
current->next=NULL;

if (head==NULL)
{
head=tail=current;
tail->next=NULL;
}
else
{
tail->next=current;
tail=current;
}

} while (ch!=EOF);
}
else printf("Empty file. No data.\n");

fclose(pfile);
printf("Press any key to continue...");
getch(); main();
return;
}

void print_data()
{
FILE *pfile=NULL;
char *filename="C:\\Dev-Cpp\\payfile.txt";
char answer;

pfile=fopen(filename, "w");
printf("\tWAGES OF EMPLOYEE");
fputs("\tWAGES OF EMPLOYEE", pfile);

current=head;
while(current!=NULL)
{
printf("\nEmployee ID : %s\n", current->employee_id);
fputs("\nEmployee ID : ", pfile); fputs(current->employee_id, pfile);
printf("Pay rate : %.2f\n", current->pay_rate);
fputs("\nPay rate : ", pfile); fprintf(pfile, "%.2f", current->pay_rate);
printf("Hours worked : %i\n", current->hours_worked);
fputs("\nHours worked : ", pfile); fprintf(pfile, "%i", current->hours_worked);
printf("Wages : %.2f\n", current->wages);
fputs("\nWages : ", pfile); fprintf(pfile, "%.2f", current->wages);
fputs("\n", pfile);

current=current->next;
}

fclose(pfile);
printf("\nDo you want to open payfile.txt?");
scanf(" %c", &answer);
if (tolower(answer)=='y') system("start C:\\Dev-Cpp\\payfile.txt");
else main();

return;
}


Can you help me solve this problem?
Please forgive my bad English.