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segmentation fault - pointers/functions I'm having a problem in my second performed function. After the first 'hours' are entered I get a 'segmentation fault'. Any thoughts?
Code:#include <stdio.h> #include <strings.h> #include <stdlib.h> #define total_employees 5 #define over_time_rate 1.5 #define forty_hour_week 40 struct s_employee { char name[20] ; /* user name */ int clock_number ; /* clock # */ float hourly_rate ; /* hourly rate of pay */ float hours_worked ; /* hours worked */ float overtime_hours ; /* OT hours worked */ float gross_pay ; /* calc gross pay amount */ float forty_hour_pay ; /* calc gross pay amount for 40 hours */ float overtime_pay ; /* calc gross pay amount for time > 40 hours */ struct s_employee *next_emp; }; /************************************************************************/ /* begin - Function: f_input1 */ /************************************************************************/ /* */ /* Purpose: Obtains input from user */ /* */ /* Parameters: emp1 - ptr to linked list */ /* */ /* Returns: Nothing */ /* */ /************************************************************************/ void f_input1 (void) { /* local variable declaration */ int f_counter = 0 ; int f_clock_number = 0 ; char f_first_name [20] = "" ; char f_last_name [20] = "" ; float f_hourly_rate = 0 ; /* misc pointers */ struct s_employee *current_pointer, *initial_pointer, *emp1 ; /* allocate memory */ initial_pointer = (struct s_employee *)malloc(sizeof(struct s_employee)); /* Set current_pointer item to point to the first item. */ current_pointer = initial_pointer; /* populate struct */ while ( f_counter < total_employees ) { /* Prompt for user to input their first name / last name */ /* concat first/last name and move to array struct, copy string */ printf ("Please enter the first name: "); scanf ("%s", f_first_name); printf ("Please enter the last name: "); scanf ("%s", f_last_name); strcat (f_first_name, " "); strcat (f_first_name, f_last_name); strcpy(current_pointer->name, f_first_name); /* Prompt for user to input the clock # */ printf ("Please enter the clock number: ") ; scanf ("%f", ¤t_pointer->clock_number); /* Prompt for user to input the hourly rate of pay */ printf ("Please enter the hourly rate: ") ; scanf ("%f", ¤t_pointer->hourly_rate); /* process next_emp */ current_pointer = current_pointer->next_emp; current_pointer = (struct s_employee *)malloc(sizeof(struct s_employee)); ++f_counter; } } /************************************************************************/ /* end - Function: f_input1 */ /************************************************************************/ /************************************************************************/ /* begin - Function: f_input2 */ /************************************************************************/ /* */ /* Purpose: Obtains hours worked from user */ /* */ /* Parameters: emp1 - ptr to linked list */ /* */ /* Returns: Nothing */ /* */ /************************************************************************/ void f_input2 (void) { /* local variable declaration */ int f_counter = 0 ; /* misc pointers */ struct s_employee *current_pointer, *initial_pointer, *emp1 ; /* Set current_pointer item to point to the first item. */ current_pointer = initial_pointer; /* populate struct */ while ( f_counter < total_employees ) { /* Prompt for user to input the clock hours */ printf ("Please enter the total hours worked: ") ; scanf ("%f", ¤t_pointer->hours_worked); printf ("\n"); /* process next_emp */ current_pointer = current_pointer->next_emp; ++f_counter; } } /************************************************************************/ /* end - Function: f_input2 */ /************************************************************************/ main() { /* create a linked list */ struct s_employee emp1, emp2, emp3, emp4, emp5; emp1.next_emp = &emp2; emp2.next_emp = &emp3; emp3.next_emp = &emp4; emp4.next_emp = &emp5; emp5.next_emp = ( struct s_employee *) 0; /********************** begin performed functions ***********************/ /* Explain what we will be processing */ f_explain_message (); /* perform get misc function */ f_input1 (); /* perform get hours function */ f_input2 (); /* perform grosspay calc function */ f_gross_pay_calc (); /* perform print headings function */ f_print_headings (); /* perform Print outstruct employee information to the screen function */ f_print_detail (); /********************** end performed functions *************************/ }
